SB2026011431 - Use-after-free in Linux kernel mellanox mlxsw driver
Published: January 14, 2026
Security Bulletin ID
SB2026011431
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) Use-after-free (CVE-ID: CVE-2025-68800)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the mlxsw_sp_mr_route_add() function in drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/216afc198484fde110ebeafc017992266f4596ce
- https://git.kernel.org/stable/c/37ca08b35a27ce8fd8e74dd3fd2ae21c23b63b73
- https://git.kernel.org/stable/c/4049a6ace209f4ed150429f86ae796d7d6a4c22b
- https://git.kernel.org/stable/c/5f2831fc593c2b2efbff7dd0dd7441cec76adcd5
- https://git.kernel.org/stable/c/8ac1dacec458f55f871f7153242ed6ab60373b90