CVE Catalog

CVE-2026-72092

Low risk· EPSS 11%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

11th percentile - higher than 11% of all known CVEs

Summary

In the Linux kernel accel/amdxdna driver, amdxdna_cmd_submit() calls the cmd_submit pointer without checking if it is defined. For AIE4 devices (aie4_vf_ops) this pointer is NULL, leading to a NULL function-pointer call via the AMDXDNA_EXEC_CMD ioctl and a kernel oops. The fix rejects the submission with -EOPNOTSUPP when the device provides no cmd_submit op.

Risk Assessment

A user with access to the accelerator node can trigger a kernel oops, causing system unavailability or potential privilege escalation.

Recommendation

Apply the Linux kernel update containing the fix for CVE-2026-72092. Restrict access to accelerator nodes to trusted users only.

Other vulnerabilities in Linux kernel

See all
Original NVD description (English source)

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).

Vulnerability data from NVD (NIST) · CISA KEV · EPSS