SB20251230140 - Memory leak in Linux kernel sunrpc auth_gss
Published: December 30, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251230140
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2022-50821)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the gss_read_proxy_verf() function in net/sunrpc/auth_gss/svcauth_gss.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2cd6026e257362f030c8be57abaf7fc0049df60a
- https://git.kernel.org/stable/c/67eb848161c2799f2007968ea3bc87adb15c9567
- https://git.kernel.org/stable/c/76f2497a2faa6a4e91efb94a7f55705b403273fd
- https://git.kernel.org/stable/c/aa91afe597401b78baa7d751c71eedb92c80bd4d
- https://git.kernel.org/stable/c/c9ded831e2552b9c3cab7e2591a190e94f9d29c0
- https://git.kernel.org/stable/c/d01fa993eb7fbc305f0a9c3e8bfac6513efc13b6
- https://git.kernel.org/stable/c/da522b5fe1a5f8b7c20a0023e87b52a150e53bf5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.270
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.163
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.87
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.229
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2