CVE-2026-68265 drm/xe/vm: Fix BO prefetch with CONSULT_MEM_ADVISE_PREF_LOC
A null dereference in the Linux kernel's DRM Xe driver allows local attackers to cause a denial of service via improper memory advice handling.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-68265?
CVE-2026-68265 is a high-severity vulnerability in Linux, published on 10 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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)
Weakness: CWE-125
Which versions are affected by CVE-2026-68265?
How do I fix CVE-2026-68265?
Apply the vendor's patch.
Is CVE-2026-68265 being exploited?
There is no known exploitation of CVE-2026-68265 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68265, DEBIAN-CVE-2026-68265, GHSA-298g-42h7-52m6, UBUNTU-CVE-2026-68265.