i915: don't use a vma that didn't match the context VM

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In eb_lookup_vma(), the code checks that the context vm matches before
incrementing the i915 vma usage count, but for the non-matching case it
didn't clear the non-matching vma pointer, so it would then mistakenly
be returned, causing potential UaF and refcount issues.

Reported-by: Yassine Mounir <sosohero200@gmail.com>
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Linus Torvalds 2026-04-05 12:42:25 -07:00

parent eb3765aa71

commit 5401b9adeb

1 changed files with 2 additions and 0 deletions

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drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c

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