SB20260928349 - Use-after-free in Linux kernel afs
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB20260928349
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-97583)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to a use-after-free in AFS peer application-data handling when handling an RxRPC callback after an AFS fileserver address-list refresh. A remote attacker can trigger a callback through an RxRPC connection associated with a removed peer to execute arbitrary code.
User interaction is required.
Remediation
Install update from vendor's website.