#VU121379 Use-after-free in Linux kernel - CVE-2025-68800
Published: January 14, 2026
Vulnerability identifier: #VU121379
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-68800
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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 repository.
External links
- 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