[Webkit-unassigned] [Bug 239154] [CoreIPC][WebGL] Heap Buffer Overflow from CoreIPC WebGL MultiDraw* due to discarded firsts/counts length in favour of attacker controlled drawcount

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=239154

--- Comment #11 from Kenneth Russell <kbr at google.com> ---
Comment on attachment 457590
  --> https://bugs.webkit.org/attachment.cgi?id=457590
Patch

Would it be more straightforward to send the spans over IPC as specified by the web app, and verify that their size is >= drawcount in GraphicsContextGLANGLE in the GPU process?

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