Linux i915 GPU kernel driver (submission backend setup): i915 dereferences the submission backend before checking

CVE-2026-31540Kernel, userspace & hypervisorcurated

Impact

i915 dereferences the submission backend before checking it is set, which happens when the GuC/HuC firmware binaries are absent. Node panics on GPU init instead of degrading. Common on minimal host images that omit linux-firmware.

Who can reach it

No attacker; triggered by a node image missing GPU firmware blobs.

What to do

Kernel update plus reboot, and fix the node image so linux-firmware carries the GuC/HuC blobs for the installed GPUs.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-31540 https://git.kernel.org/stable/c/0162ab3220bac870e43e229e6e3024d1a21c3f26

This entry is curated: imported from vendor advisories with machine assistance, not yet individually verified. Confirm against your vendor's advisory before acting, and report anything wrong.