RESOLVED FIXED292796
Guard against a null name section in makeString in WasmIndexOrName.h 
https://bugs.webkit.org/show_bug.cgi?id=292796
Summary Guard against a null name section in makeString in WasmIndexOrName.h
Vassili Bykov
Reported 2025-05-09 12:00:20 PDT
The makeString implementation in WasmIndexOrName.h does not guard against the name section being null. IndexOrName::dump is basically the same thing, and it does check for the name section being there. Not checking for null may potentially cause a segfault. I'm not sure if a non-empty instance with a null name section is a possibility under normal circumstances , but I hit this while experimenting with some wasm changes.
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Radar WebKit Bug Importer
Comment 1 2025-05-09 12:00:35 PDT
<rdar://problem/151025732>
Vassili Bykov
Comment 2 2025-05-09 12:49:30 PDT
Pull request: https://github.com/apple/WebKit/pull/3073
Vassili Bykov
Comment 3 2025-05-09 13:30:16 PDT
This is only a NULL pointer dereference.
Vassili Bykov
Comment 4 2025-05-09 14:03:04 PDT
Pull request: https://github.com/WebKit/WebKit/pull/45188
EWS
Comment 5 2025-05-09 16:33:53 PDT
Committed 294737@main (67335a3cc0c4): <https://commits.webkit.org/294737@main> Reviewed commits have been landed. Closing PR #45188 and removing active labels.
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