CVE-2026-92479 scsi: ufs: Avoid NULL CQE dereference when reporting invalid tags
A NULL pointer dereference in the Linux kernel UFS driver can cause a system crash when processing invalid completion tags.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-92479?
CVE-2026-92479 is a vulnerability in Linux, published on 17 Sep 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:
scsi: ufs: Avoid NULL CQE dereference when reporting invalid tags
The single-doorbell completion path can call ufshcd_compl_one_cqe() with a NULL CQE. If no command is associated with the completion tag, the warning message dereferences the CQE while reporting the error. Avoid that dereference and include the invalid tag in the warning.
Which versions are affected by CVE-2026-92479?
How do I fix CVE-2026-92479?
Apply the vendor's patch.
Is CVE-2026-92479 being exploited?
There is no known exploitation of CVE-2026-92479 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-92479, GHSA-qmq3-vr5x-q9gg, UBUNTU-CVE-2026-92479.