CVE-2026-43199

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A scheduling while atomic bug exists in the mlx5e ipsec init macs() function. The issue occurs because the mlx5 query mac address() function queries hardware via mlx5 cmd exec(), which can sleep. However, this process is called from the mlx5e ipsec handle event workqueue, which operates in an atomic context (a state where the system cannot be interrupted or put to sleep). This conflict leads to a system bug when the kernel attempts to schedule a task while in an atomic state.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.