SB20251226238 - Improper locking in Linux kernel core en driver
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226238
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) Improper locking (CVE-ID: CVE-2023-54074)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the mlx5e_invalidate_encap() function in drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_encap.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/00959a1bad58e4b6c14a2729f84d354255073609
- https://git.kernel.org/stable/c/b8b4292fdd8818ab43b943b6717811651f51e39f
- https://git.kernel.org/stable/c/be071cdb167fc3e25fe81922166b3d499d23e8ac
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.31
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4