CVE-2026-43391 — nsfs: tighten permission checks for handle opening
In the Linux kernel, the following vulnerability has been resolved: nsfs: tighten permission checks for handle opening Even privileged services should not necessarily be able …
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 handle opening 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