CVE-2026-23264 Revert "drm/amd: Check if ASPM is enabled from PCIe subsystem"
A regression in the Linux kernel AMD GPU driver causes system crashes on systems with mixed ASPM support, requiring a patch to restore stability.
- 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-2026-23264?
CVE-2026-23264 is a medium-severity denial of service vulnerability in Linux kernel, published on 18 Mar 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:
Revert "drm/amd: Check if ASPM is enabled from PCIe subsystem"
This reverts commit 7294863a6f01248d72b61d38478978d638641bee.
This commit was erroneously applied again after commit 0ab5d711ec74 ("drm/amd: Refactor `amdgpu_aspm` to be evaluated per device") removed it, leading to very hard to debug crashes, when used with a system with two AMD GPUs of which only one supports ASPM.
(cherry picked from commit 97a9689300eb2b393ba5efc17c8e5db835917080)
Which versions are affected by CVE-2026-23264?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-23264?
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-2026-23264 being exploited?
There is no known exploitation of CVE-2026-23264 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-23264, DEBIAN-CVE-2026-23264, GHSA-pqp4-5r3j-578m, ROOT-OS-UBUNTU-2204-CVE-2026-23264, ROOT-OS-UBUNTU-2404-CVE-2026-23264, UBUNTU-CVE-2026-23264.