Bug 2347656 (CVE-2022-49635)

Summary: CVE-2022-49635 kernel: drm/i915/selftests: fix subtraction overflow bug
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-02-26 03:02:01 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/i915/selftests: fix subtraction overflow bug

On some machines hole_end can be small enough to cause subtraction
overflow. On the other side (addr + 2 * min_alignment) can overflow
in case of mock tests. This patch should handle both cases.

(cherry picked from commit ab3edc679c552a466e4bf0b11af3666008bd65a2)
Comment 1 Mauro Matteo Cascella 2025-02-26 12:08:48 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022617-CVE-2022-49635-af1b@gregkh/T