[frameworks-kimageformats] [Bug 498380] New: Integer overflow in XCF parser

[bugzilla_noreply]

https://bugs.kde.org/show_bug.cgi?id=498380

            Bug ID: 498380
           Summary: Integer overflow in XCF parser
    Classification: Frameworks and Libraries
           Product: frameworks-kimageformats
           Version: 6.9.0
          Platform: Compiled Sources
                OS: All
            Status: REPORTED
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: alex.me...@kde.org
          Reporter: iph...@gmail.com
                CC: aa...@kde.org, kdelibs-b...@kde.org
  Target Milestone: ---

Here:
https://github.com/KDE/kimageformats/blob/1982557a55fb57ccd07e40194b53693d2b0ab40b/src/imageformats/xcf.cpp#L1316

And also in the other 2 places. `-INT_MIN` is undefined behaviour and will
cause a crash on UBSan.

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