VULNERABILITY INTELLIGENCE
CVE-2026-43391
CVSS score8.8 HIGH
EPSS probability0.13%
CISA KEVNot currently listed
Published2026-05-08
Last modified2026-09-07
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Description
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.
Weakness classification
- nvd@nist.gov: NVD-CWE-noinfo