CVE-2026-72362 drm/xe/pt: Fix NULL pointer dereference in xe_pt_zap_ptes_entry()
A local attacker can crash the Linux kernel by triggering a NULL pointer dereference in the Xe GPU driver's page-table walk framework.
- 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-2026-72362?
CVE-2026-72362 is a vulnerability in Linux, published on 15 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/pt: Fix NULL pointer dereference in xe_pt_zap_ptes_entry()
The page-table walk framework may pass a NULL *child pointer for unpopulated entries. xe_pt_zap_ptes_entry() called container_of(*child) before checking for NULL, then dereferenced the result, causing a crash.
Move the container_of() call after a NULL guard, so the function returns early instead of proceeding with an invalid pointer. XE_WARN_ON is kept to help root cause the issue, but we now bail instead of crashing the driver.
v2: Comment that triggering XE_WARN_ON is unexpected behavior (Matt Brost)
(cherry picked from commit b9297d19d9df5d4b6c994648570c5dcd1cac68ff)
Which versions are affected by CVE-2026-72362?
How do I fix CVE-2026-72362?
Apply the vendor's patch.
Is CVE-2026-72362 being exploited?
There is no known exploitation of CVE-2026-72362 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72362, DEBIAN-CVE-2026-72362, GHSA-7rqx-8x9q-hj6w, UBUNTU-CVE-2026-72362.