CVE-2026-43390

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43390
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/0abd81645fc95ec6a9d4e4813000f22c5efc0ff4 Patch
https://git.kernel.org/stable/c/8d76afe84fa2babf604b3c173730d4d2b067e361 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

26 May 2026, 15:00

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/0abd81645fc95ec6a9d4e4813000f22c5efc0ff4 - () https://git.kernel.org/stable/c/0abd81645fc95ec6a9d4e4813000f22c5efc0ff4 - Patch
References () https://git.kernel.org/stable/c/8d76afe84fa2babf604b3c173730d4d2b067e361 - () https://git.kernel.org/stable/c/8d76afe84fa2babf604b3c173730d4d2b067e361 - Patch
CWE NVD-CWE-noinfo
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*

08 May 2026, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-08 15:16

Updated : 2026-05-26 15:00

NVD link : CVE-2026-43390

Mitre link : CVE-2026-43390

CVE.ORG link : CVE-2026-43390

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo