SB20260912251 - Memory leak in Linux kernel sunrpc auth_gss
Published: September 12, 2026
Security Bulletin ID
SB20260912251
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote 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-2026-89539)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a memory leak in gssx_dec_option_array() when processing a reply containing duplicate CREDS_VALUE options. A remote attacker can send a crafted reply containing duplicate CREDS_VALUE options to cause a denial of service.
Remediation
Install update from vendor's website.