Linux Kernel Vulnerability Affecting Mount Namespace Management

CVE-2025-40195

What is CVE-2025-40195?

A vulnerability in the Linux kernel related to the mount namespace function can occur when 'mnt_ns_release()' is called with a NULL pointer in the 'listmount()' function. This flaw could potentially result in system instability and unpredictable behavior. The issue has been addressed to ensure that NULL values are handled properly, thus fortifying the integrity of the mount namespace management.

References