[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

Kimmo Kinnunen <kkinnunen at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Group|Security-Sensitive          |
                 CC|                            |dino at apple.com,
                   |                            |kbr at google.com
          Component|Security                    |WebGL
           Assignee|webkit-security-unassigned@ |webkit-unassigned at lists.web
                   |lists.webkit.org            |kit.org
            Product|Security                    |WebKit

--- Comment #9 from Kimmo Kinnunen <kkinnunen at apple.com> ---
Moving out of security, GPUP variant has not shipped anywhere. This is only a security problem for GPUP in case WP can run arbitrary code to select the arbitrary drawcount.

If WP variant has different threat model: if WP can already run arbitrary code to select arbitrary drawcount, it doesn't need an overflow in WP.

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