CVE-2026-97586 afs: Fix missing kunmap in afs_dir_search_bucket()
A missing memory unmap in the Linux kernel AFS filesystem can lead to memory corruption and denial of service.
- 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-2026-97586?
CVE-2026-97586 is a memory corruption vulnerability in Linux, published on 25 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:
afs: Fix missing kunmap in afs_dir_search_bucket()
Fix afs_dir_search_bucket() to kunmap the block it's using in the "bad:" path.
Which versions are affected by CVE-2026-97586?
How do I fix CVE-2026-97586?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-97586 being exploited?
There is no known exploitation of CVE-2026-97586 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-97586, DEBIAN-CVE-2026-97586, GHSA-6539-xxxr-pw8x, UBUNTU-CVE-2026-97586.