SB2025091732 - Buffer overflow in Linux kernel nfsd
Published: September 17, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091732
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2022-50345)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to memory corruption within the nfsd3_proc_read() function in fs/nfsd/nfs3proc.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/309f29361b6bfae96936317376f1114568c5de19
- https://git.kernel.org/stable/c/75d9de25a6f833dd0701ca546ac926cabff2b5af
- https://git.kernel.org/stable/c/bc6c0ed253cd4763dba7541d558e4b704f33176f
- https://git.kernel.org/stable/c/c23687911f82a63fa2977ce9c992b395e90f8ba0
- https://git.kernel.org/stable/c/fa6be9cc6e80ec79892ddf08a8c10cabab9baf38
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.220
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.75
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1