CVE-2026-68265

Summary

In the Linux kernel, the following vulnerability has been resolved:

drm/xe/vm: Fix BO prefetch with CONSULT_MEM_ADVISE_PREF_LOC

When prefetch region is DRM_XE_CONSULT_MEM_ADVISE_PREF_LOC for a BO VMA, the code used it as an index into region_to_mem_type[], causing an out-of-bounds access since the value is -1.

Resolve the preferred location for BO VMAs directly: local VRAM on dGFX (using the BO's tile placement) or system memory on iGPU.

Discovered using AI-assisted static analysis confirmed by Intel Product Security.

v2: -Fix null dereference

(cherry picked from commit d9a4906ac03be9f6ed3f3b45c56c866b867fd75b)

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe < d256dac008d1d9e6378aa1a5454e89a8292d174caffected
LinuxLinuxc1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe < c4affa4e8bc8086b4d3e8d6cf1055a624f813d72affected
LinuxLinuxc1bb69a2e8e2d55c3725e304d8b8fd189ee43fbe < 7bc597ce74bab4153b2009c92eccf889e9d74044affected
LinuxLinux6.18affected
LinuxLinux0 < 6.18unaffected
LinuxLinux6.18.44 <= 6.18.*unaffected
LinuxLinux7.1.6 <= 7.1.*unaffected
LinuxLinux7.2-rc4 <= *unaffected

Weaknesses

References