CVE-2026-43390

medium

Description

In the Linux kernel, the following vulnerability has been resolved: nstree: tighten permission checks for listing 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.

References

https://git.kernel.org/stable/c/8d76afe84fa2babf604b3c173730d4d2b067e361

https://git.kernel.org/stable/c/0abd81645fc95ec6a9d4e4813000f22c5efc0ff4

Details

Source: Mitre, NVD

Published: 2026-05-08

Updated: 2026-05-26

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00018