CVE-2026-68265: drm/xe/vm: Fix BO prefetch with CONSULT_MEM_ADVISE_PREF_LOC
In the Linux kernel, the following vulnerability has been resolved:
drm/xe/vm: Fix BO prefetch with CONSULTMEMADVISEPREFLOC
When prefetch region is DRMXECONSULTMEMADVISEPREFLOC for a BO VMA, the code used it as an index into regiontomemtype[], 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
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Configuration
Apply the Linux kernel fix for the drm/xe/vm out-of-bounds access in BO prefetch when prefetch region is DRM_XE_CONSULT_MEM_ADVISE_PREF_LOC (where the value can be -1), as described: resolve preferred BO VMA location directly to local VRAM on dGFX and fix BO prefetch handling so it doesn’t index region_to_mem_type[] with -1.
Linux kernel (drm/xe/vm) DRM_XE_CONSULT_MEM_ADVISE_PREF_LOC handling for BO VMA prefetch = Ensure CONSULT_MEM_ADVISE_PREF_LOC prefetch path does not use -1 as an index into region_to_mem_type[]
Event History
Frequently Asked Questions
What is the severity of CVE-2026-68265?
CVE-2026-68265 has a risk rating of 38.
How do I fix CVE-2026-68265?
Fixing CVE-2026-68265 requires updating to the latest version of the Linux kernel where this vulnerability has been patched.
What does CVE-2026-68265 affect?
CVE-2026-68265 affects the Linux kernel's DRM Xe VM component, specifically related to buffer object prefetching.
What could be the impact of CVE-2026-68265?
The impact of CVE-2026-68265 is an out-of-bounds access that could potentially lead to system instability or crashes.
When was CVE-2026-68265 published?
CVE-2026-68265 was published on August 10, 2026.