CVE-2026-98519 drm/amdgpu: Fix runtime PM leak in amdgpu_debugfs_test_ib_show()
A local attacker can cause a GPU power management reference leak, keeping the GPU awake and potentially leading to resource exhaustion or denial of service.
- 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-2026-98519?
CVE-2026-98519 is a denial of service vulnerability in Linux, published on 18 Oct 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: Fix runtime PM leak in amdgpu_debugfs_test_ib_show()
amdgpu_debugfs_test_ib_show() resumes the device with pm_runtime_get_sync() before taking the reset domain semaphore with down_write_killable(). If the write lock acquisition is interrupted, the function returns without calling pm_runtime_put_autosuspend(), leaking the runtime PM reference acquired for the device and keeping the GPU awake.
Drop the runtime PM reference on the interrupted down_write_killable() error path before returning.
(cherry picked from commit ec30a576c2d4c0364549e6c04218f50704ef56c8)
Which versions are affected by CVE-2026-98519?
How do I fix CVE-2026-98519?
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-2026-98519 being exploited?
There is no known exploitation of CVE-2026-98519 in the wild and no public exploit code.
Sources
Also known as AZL-109298, BELL-CVE-2026-98519, DEBIAN-CVE-2026-98519, GHSA-6qmp-28g8-3p6v, UBUNTU-CVE-2026-98519.