CVE-2026-43391

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.0 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1797ee11451f1b2be69863a9f5bd43b948813fdf	Patch
https://git.kernel.org/stable/c/24ebaf6676ae4f74f4856eb645959b15e62bc1b4
https://git.kernel.org/stable/c/d2324a9317f00013facb0ba00b00440e19d2af5e	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc2::::::

History

No history.

Information

Published : 2026-05-08 15:16

Updated : 2026-09-07 16:17

NVD link : CVE-2026-43391

Mitre link : CVE-2026-43391

CVE.ORG link : CVE-2026-43391

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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