Linux Distros Unpatched Vulnerability : CVE-2026-43391

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: nsfs: tighten permission checks for handle opening Even privileged services should not...

UBUNTU-CVE-2026-43403

In the Linux kernel, the following vulnerability has been resolved: nsfs: tighten permission checks for ns iteration ioctls Even privileged services should not necessarily be able to see other privileged service's namespaces so they can't leak information to each other. Use mayseeallnamespaces...

CVE-2026-43391

CVE-2026-43391 affects the Linux kernel nsfs component. The issue arises from insufficient permission checks when opening handles, enabling privileged services to potentially view other privileged services’ namespaces and leak information. The fix centralizes policy via may_see_all_namespaces() a...