Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 223bd0faeeb84888c1553f315d35408758143ba3
https://github.com/WebKit/WebKit/commit/223bd0faeeb84888c1553f315d35408758143ba3
Author: Sergey Rubanov <[email protected]>
Date: 2026-09-10 (Thu, 10 Sep 2026)
Changed paths:
A JSTests/stress/arraybuffer-grow-resize-huge-length.js
M Source/JavaScriptCore/runtime/JSArrayBufferPrototype.cpp
Log Message:
-----------
[JSC] Check ArrayBuffer grow/resize length before converting to size_t
https://bugs.webkit.org/show_bug.cgi?id=323440
https://bugs.webkit.org/show_bug.cgi?id=323441
Reviewed by Yusuke Suzuki.
grow and resize used ToIntegerOrInfinity and then cast to size_t after
only checking finite and non-negative. A value such as 1e20 is in range
for double but not for size_t.
Use toIndex so the result is uint64_t and a negative length throws
RangeError before the detached check.
* JSTests/stress/arraybuffer-grow-resize-huge-length.js: Added.
* Source/JavaScriptCore/runtime/JSArrayBufferPrototype.cpp:
(arrayBufferProtoFuncResize):
(sharedArrayBufferProtoFuncGrow):
Canonical link: https://commits.webkit.org/320821@main
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