[webkit-changes] [WebKit/WebKit] 1fa5ad: Cherry-pick 252432.896 at safari-7614-branch (91df735...

[Dan Glastonbury]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 1fa5adc1417a27e7b4a71b2a5da1c0781f43c434
      https://github.com/WebKit/WebKit/commit/1fa5adc1417a27e7b4a71b2a5da1c0781f43c434
  Author: Dan Glastonbury <djg at apple.com>
  Date:   2023-01-24 (Tue, 24 Jan 2023)

  Changed paths:
    M Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp

  Log Message:
  -----------
  Cherry-pick 252432.896 at safari-7614-branch (91df735c5c49). rdar://104611996

    [WebGL] Harden texImageImpl byte length calculation
    rdar://98583503

    Reviewed by Kimmo Kinnunen and Ryan Haddad.

    The calculation of the image size has been validated earlier but out of an
    abundance of caution, use checked arithmetic on size_t to perform calculation,
    returning a GL error on overflow.

    * Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp:
    (WebCore::WebGLRenderingContextBase::texImageImpl):
    Calculate imagePixelsByteLength with checked arithmetic to catch integer
    overflow.

    Canonical link: https://commits.webkit.org/252432.896@safari-7614-branch

Canonical link: https://commits.webkit.org/259338@main