SB2025100555 - Buffer overflow in Linux kernel nfsd
Published: October 5, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100555
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 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2022-50487)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to memory corruption within the nfsd3_init_dirlist_pages() 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/071a076fd1b763aa6fe478efa047e0a549ba9c22
- https://git.kernel.org/stable/c/279274e31270c28b86feffe5e166d4088f22317b
- https://git.kernel.org/stable/c/57774b1526163766403167b7bf00b136fb103761
- https://git.kernel.org/stable/c/640f87c190e0d1b2a0fcb2ecf6d2cd53b1c41991
- https://git.kernel.org/stable/c/9c3224826ec17f14e8bdfc86cb7e82fe52d744a7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17