CVE-2026-23173

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.18.0 #156

Description The Linux kernel contained a flaw in the net/mlx5e module related to Traffic Control (TC) steering flows. Specifically, the issue occurred during the deletion of TC steering flows, where the process did not restrict iteration to existing peers. This resulted in attempts to access non-existent peers, leading to a kernel NULL pointer dereference and a potential system crash. The issue was identified as a BUG: kernel NULL pointer dereference.

Recommendations Update to version 6.18.0 #156 or later to resolve this issue.