CVE-2026-97426 drm/amdgpu/pm: fix SmartShift bias sysfs store PM refcount on parse error
A local attacker can cause a denial of service in the Linux kernel by triggering a reference count leak in the AMD GPU SmartShift driver via sysfs.
- 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-2026-97426?
CVE-2026-97426 is a denial of service 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/amdgpu/pm: fix SmartShift bias sysfs store PM refcount on parse error
Return the parse error before acquiring PM access.
Which versions are affected by CVE-2026-97426?
How do I fix CVE-2026-97426?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-97426 being exploited?
There is no known exploitation of CVE-2026-97426 in the wild and no public exploit code.
Sources
Also known as AZL-104021, BELL-CVE-2026-97426, DEBIAN-CVE-2026-97426, GHSA-hr5w-3x7j-hxc6, UBUNTU-CVE-2026-97426.