In the Linux kernel, the following vulnerability has been resolved:

rtnetlink: add missing netlink_ns_capable() check for peer netns

rtnl_newlink() lacks a CAP_NET_ADMIN capability check on the peer
network namespace when creating paired devices (veth, vxcan,
netkit). This allows an unprivileged user with a user namespace
to create interfaces in arbitrary network namespaces, including
init_net.

Add a netlink_ns_capable() check for CAP_NET_ADMIN in the peer
namespace before allowing device creation to proceed.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00017.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
81adee47dfb608df3ad0b91d230fb3cef75f0060 affected < 0975b64ffb34560042090a5986c3a02e6c80f36f
81adee47dfb608df3ad0b91d230fb3cef75f0060 affected < d04cc16d3624218a5458b2b664ae431f1b3b334d
81adee47dfb608df3ad0b91d230fb3cef75f0060 affected < 7b735ef81286007794a227ce2539419479c02a5f
Linux Linux affected
Version Status Constraints
2.6.33 affected —
0 unaffected < 2.6.33
6.18.24 unaffected ≤ 6.18.*
6.19.14 unaffected ≤ 6.19.*
7.0 unaffected ≤ *

No data.

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0975b64ffb34560042090a5986c3a02e6c80f36f cve-icon cve-icon
https://git.kernel.org/stable/c/7b735ef81286007794a227ce2539419479c02a5f cve-icon cve-icon
https://git.kernel.org/stable/c/d04cc16d3624218a5458b2b664ae431f1b3b334d cve-icon cve-icon
History

Thu, 30 Apr 2026 14:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Thu, 30 Apr 2026 11:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: rtnetlink: add missing netlink_ns_capable() check for peer netns rtnl_newlink() lacks a CAP_NET_ADMIN capability check on the peer network namespace when creating paired devices (veth, vxcan, netkit). This allows an unprivileged user with a user namespace to create interfaces in arbitrary network namespaces, including init_net. Add a netlink_ns_capable() check for CAP_NET_ADMIN in the peer namespace before allowing device creation to proceed.
Title rtnetlink: add missing netlink_ns_capable() check for peer netns
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-04-30T10:34:51.589Z

Reserved: 2026-03-09T15:48:24.131Z

Link: CVE-2026-31692

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-30T11:16:20.860

Modified: 2026-04-30T11:16:20.860

Link: CVE-2026-31692

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-30T14:30:06Z

Weaknesses