CVE-2026-97495 drm/amdkfd: Check bounds on allocate_doorbell
A missing bounds check in the Linux kernel's AMD KFD driver allows local attackers to specify invalid doorbell IDs, potentially leading to privilege escalation or system crashes.
- 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-2026-97495?
CVE-2026-97495 is a missing authorization vulnerability in Linux, published on 24 Sep 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/amdkfd: Check bounds on allocate_doorbell
allocated_doorbell has an option to set the doorbell id to a specific value (used by CRIU). This value was not bounds checked.
Check to confirm it's less than KFD_MAX_NUM_OF_QUEUES_PER_PROCESS.
Which versions are affected by CVE-2026-97495?
How do I fix CVE-2026-97495?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-97495 being exploited?
There is no known exploitation of CVE-2026-97495 in the wild and no public exploit code.
Sources
Also known as AZL-103979, BELL-CVE-2026-97495, DEBIAN-CVE-2026-97495, GHSA-jwq7-cf4h-qr55, UBUNTU-CVE-2026-97495.