Bug 286369

Summary: Pad IPInt argumINTBytecode to an even size
Product: WebKit Reporter: daniel_liu4
Component: JavaScriptCoreAssignee: Nobody <webkit-unassigned>
Status: RESOLVED FIXED    
Severity: Normal CC: webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

daniel_liu4
Reported 2025-01-22 10:47:38 PST
During local initialization, we default initialize locals all the way until we hit the end of our local table. Because of IPInt's design, the local table is aligned to an even size, meaning that we may read out of bounds by 1 from the metadata vector. We need to pad this vector with an extra dummy element to make sure we don't go out of bounds.
Attachments
Radar WebKit Bug Importer
Comment 1 2025-01-22 10:47:48 PST
daniel_liu4
Comment 2 2025-01-22 11:00:37 PST
EWS
Comment 3 2025-01-23 11:44:53 PST
Committed 289308@main (7214ee02bbf6): <https://commits.webkit.org/289308@main> Reviewed commits have been landed. Closing PR #39392 and removing active labels.
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