CVE-2026-92478 scsi: ufs: core: Validate connected lane counts
Attackers with local access can cause a denial of service by triggering invalid lane count values in the UFS driver.
- 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-2026-92478?
CVE-2026-92478 is a denial of service 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: core: Validate connected lane counts
The connected lane count is used by TX equalization code to index arrays sized by UFS_MAX_LANES. Reject zero and out-of-range RX or TX lane counts before they can be propagated.
Which versions are affected by CVE-2026-92478?
How do I fix CVE-2026-92478?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-92478 being exploited?
There is no known exploitation of CVE-2026-92478 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-92478, GHSA-f7r3-cvv6-8252, UBUNTU-CVE-2026-92478.