CVE-2026-43403

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

Description Insufficient permission checks in the nsfs (namespace filesystem) for namespace iteration ioctls could allow privileged services to view namespaces belonging to other privileged services, potentially leading to information leakage. The issue is addressed by implementing the may see all namespaces() helper to centralize the permission policy.

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