CVE-2026-72092 accel/amdxdna: reject command submission on devices without a submit op
A local attacker can crash the Linux kernel by triggering a null pointer dereference in the AMD XDNA driver via a specific ioctl on unsupported devices.
- 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-2026-72092?
CVE-2026-72092 is a 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:
accel/amdxdna: reject command submission on devices without a submit op
amdxdna_cmd_submit() calls xdna->dev_info->ops->cmd_submit() unconditionally, but only aie2_dev_ops defines that callback. aie4_vf_ops (the AIE4 SR-IOV virtual function) does not, so a user AMDXDNA_EXEC_CMD ioctl on an AIE4 device reaches a NULL function-pointer call and oopses the kernel. AIE4 submits work through a mapped user queue and doorbell, not this ioctl path.
Reject the submission early with -EOPNOTSUPP when the device provides no cmd_submit op, so the shared EXEC ioctl is a clean no-op on such devices.
Found by 0sec automated security-research tooling (https://0sec.ai).
Which versions are affected by CVE-2026-72092?
How do I fix CVE-2026-72092?
Apply the vendor's patch.
Is CVE-2026-72092 being exploited?
There is no known exploitation of CVE-2026-72092 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72092, DEBIAN-CVE-2026-72092, GHSA-phpf-xwr2-r7xq, UBUNTU-CVE-2026-72092.