PT-2026-121983
CVE-2026-99006
·
Published
2026-10-23
·
Updated
2026-10-23
Description by
CVSS 3.1
7.8
HighMetricsAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
In the Linux kernel, the following vulnerability has been resolved:
drm/i915/gem: Prevent overstepping exec array boundary
It is possible for eb relocate parse slow() to call kvfree() on
entries outside the original exec array during following
scenario inside eb relocate parse slow():
- eb copy relocations() allocates as many as eb->buffer count copies for exec entries;
- eb parse() appends up to two VMAs, right after incrementing eb->buffer count;
- cleanup under "out" label uses this incremented buffer count to release relocation pointers from exec array via kvfree(), not from VMA array.
To amend this problem, ensure that relocation cleanup uses the
original exec object count, excluding the VMAs appended by the
command parser.
(cherry picked from commit 2a0158925fb943c7ba8f3216e2734952128defc9)
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