CVE-2026-43403 — nsfs: tighten permission checks for ns iteration ioctls
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 …
Published: 2026-05-08 · CVSS: 8.8 · CVSS 3.1
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 may_see_all_namespaces() helper that centralizes this policy until the nstree adapts.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7