CVE-2026-74450 drm/amd/pm: fix pptable use-after-free
A use-after-free in the Linux kernel AMD power management driver allows local attackers to potentially execute code or escalate privileges via concurrent sysfs access.
- 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-2026-74450?
CVE-2026-74450 is a high-severity use after free 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/amd/pm: fix pptable use-after-free
amdgpu_dpm_get_pp_table() returns a pointer to a driver-owned power table after dropping adev->pm.mutex. The sysfs path then copies from that pointer. A concurrent pp_table write can replace and free the allocation during the copy, causing a use-after-free.
Change the DPM interface to copy into caller-provided storage while the mutex is held. Keep the size-only query for attribute discovery without exposing the driver-owned pointer.
(cherry picked from commit f6eed7acfd30099ef7baeb6ba45bb59daad80631)
Which versions are affected by CVE-2026-74450?
How do I fix CVE-2026-74450?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-74450 being exploited?
There is no known exploitation of CVE-2026-74450 in the wild and no public exploit code.
Sources
Also known as AZL-96249, BELL-CVE-2026-74450, DEBIAN-CVE-2026-74450, GHSA-w7rg-pqcq-fh8p, UBUNTU-CVE-2026-74450.