SB20251226190 - NULL pointer dereference in Linux kernel core
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226190
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-2023-54094)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the skb_segment_list() function in net/core/skbuff.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/1731234e8b60063eae858c77b55c7a88f5084353
- https://git.kernel.org/stable/c/7a59f29961cf97b98b02acaadf5a0b1f8dde938c
- https://git.kernel.org/stable/c/bc3ab5d2ab69823f5cff89cf74ef78ffa0386c9a
- https://git.kernel.org/stable/c/c329b261afe71197d9da83c1f18eb45a7e97e089
- https://git.kernel.org/stable/c/ea438eed94ac0fe69b93ac034738823c0e989a12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.121