SB20251230212 - NULL pointer dereference in Linux kernel nfsd
Published: December 30, 2025 Updated: December 30, 2025
Security Bulletin ID
SB20251230212
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) NULL pointer dereference (CVE-ID: CVE-2023-54276)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the nfsd_init_net() function in fs/nfsd/nfsctl.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/3025d489f9c8984d1bf5916c4a20097ed80fca5c
- https://git.kernel.org/stable/c/66a178177b2b3bb1d71e854c5e7bbb320eb0e566
- https://git.kernel.org/stable/c/768c408594b52d8531e1a8ab62e5620c19213e73
- https://git.kernel.org/stable/c/8549384d0f65981761fe2077d04fa2a8d37b54e0
- https://git.kernel.org/stable/c/ed9ab7346e908496816cffdecd46932035f66e2e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.226
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.166
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.106
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5