SB2026090578 - Memory leak in Linux kernel afs
Published: September 5, 2026
Security Bulletin ID
SB2026090578
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2026-80878)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a memory leak.
The vulnerability exists due to improper resource management in afs_lookup_volume_rcu() when looking up a volume through RCU and acquiring a reference to a dying volume fails. A local user can trigger a volume lookup that encounters this condition to cause a memory leak.
Remediation
Install update from vendor's website.