CVE-2026-23000
kernel: Linux kernel (mlx5e): Denial of Service due to NULL pointer dereference during network profile change
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · January 25, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel's mlx5e network driver. A local user can exploit this vulnerability by repeatedly attempting to change the network profile, such as enabling switchdev mode, after an initial failure to apply or roll back the profile. This can lead to a NULL pointer dereference, causing the system to crash and resulting in a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference