EUVD-2026-59050
GHSA-phpf-xwr2-r7xq
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2DescriptionCVE.org
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).
Analysis
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).
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External POC / Exploit Code
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