CVE-2026-43391HIGH 8.8EPSS p6.1%

CVE-2026-43391CVE-2026-43391

linux / linux_kernel

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.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS0.17% probability of exploitation · percentile 6.1% · 2026-10-05T12:00:23Z
Published2026-05-08
Last modified2026-09-07

References

  1. https://git.kernel.org/stable/c/1797ee11451f1b2be69863a9f5bd43b948813fdf
  2. https://git.kernel.org/stable/c/d2324a9317f00013facb0ba00b00440e19d2af5e

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2026-43403
CVE
CVE-2026-43379
CVE
Linux Kernel Privilege Escalation Vulnerability
CVE
CVE-2026-43112
CVE
CVE-2026-43490
CVE
CVE-2025-22041
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.