CVE-2026-68249 drm/amdgpu/sdma5.0: replace BUG_ON() with WARN_ON()
A local attacker can crash the Linux kernel by triggering a BUG_ON condition in the amdgpu SDMA driver, causing a 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-2026-68249?
CVE-2026-68249 is a denial of service vulnerability in Linux, published on 10 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/amdgpu/sdma5.0: replace BUG_ON() with WARN_ON()
There's no need to crash the kernel for these cases.
(cherry picked from commit 8d144a0eb09537055841af48c9e7c2d4cd48e84d)
Which versions are affected by CVE-2026-68249?
How do I fix CVE-2026-68249?
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-2026-68249 being exploited?
There is no known exploitation of CVE-2026-68249 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68249, DEBIAN-CVE-2026-68249, GHSA-x2c3-f86q-wwpw, UBUNTU-CVE-2026-68249.