In the Linux kernel, the following vulnerability has been resolved:
accel/amdxdna: reject command submission on devices without a submit op
amdxdnacmdsubmit() calls xdna->devinfo->ops->cmdsubmit() unconditionally, but only aie2devops defines that callback. aie4vfops (the AIE4 SR-IOV virtual function) does not, so a user AMDXDNAEXECCMD 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).
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72092.json",
"cna_assigner": "Linux"
}