#VU122026 NULL pointer dereference in Linux kernel - CVE-2026-23000
Published: January 26, 2026
Vulnerability identifier: #VU122026
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23000
CWE-ID: CWE-476
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 perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the mlx5e_vport_uplink_rep_load() and mlx5e_vport_uplink_rep_unload() functions in drivers/net/ethernet/mellanox/mlx5/core/en_rep.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.