CVE-2026-68265
HighCVSS 7.3Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
In the Linux kernel, the drm/xe/vm driver has a vulnerability where using -1 as an array index during BO VMA prefetch with CONSULT_MEM_ADVISE_PREF_LOC causes an out-of-bounds access. The fix resolves the preferred location for BO VMAs directly.
Risk Assessment
The risk includes potential out-of-bounds read, which could lead to information disclosure or system crash. The vulnerability was confirmed by Intel Product Security.
Recommendation
It is recommended to update the Linux kernel to a version containing the fix that correctly handles prefetching with CONSULT_MEM_ADVISE_PREF_LOC.
Original NVD description (English source)
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)