CVE-2026-31692

Aliases:UBUNTU-CVE-2026-31692DEBIAN-CVE-2026-31692CGA-2g98-34rv-fp57CGA-2h9p-w9xj-q3vxCGA-2v77-25r4-x94gCGA-ccfr-prjc-3jpvCGA-cjhq-4v99-5f5jCGA-fmh4-wfqp-wjpmCGA-gc6p-jf6h-68xhCGA-gg3x-rq65-8m82CGA-gwr9-q6f2-m82mCGA-m57g-8hfw-c6qvCGA-r4q2-cxg3-99cm
Advisory lineage Upstream: 0 Downstream: 6
Analyzed
Published: 30 Apr 2026, 10:34
Last modified:11 May 2026, 22:13

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.12% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

30 Apr 2026, 10:34
Published
Vulnerability first disclosed
11 May 2026, 22:13
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.12%• Percentile: 2%

Affected Systems

  • chainguard•linux-aws-6.12

    < 6.12.85-r2

  • chainguard•linux-aws-6.18

    < 6.18.31-r0

  • chainguard•linux-azure-6.12

    < 6.12.85-r2

  • chainguard•linux-azure-6.18

    < 6.18.31-r0 | < 6.18.24-r1

  • chainguard•linux-gcp-6.12

    all

  • chainguard•linux-gcp-6.18

    < 6.18.31-r0

  • chainguard•linux-qemu-6.12

    all

  • chainguard•linux-qemu-6.18

    < 6.18.24-r3

  • chainguard•linux-vmware-6.12

    < 6.12.85-r2

  • chainguard•linux-vmware-6.18

    < 6.18.31-r0

  • debian•linux

    all | all | all | < 6.19.14-1

  • ubuntu•linux

    all | all | all | all

  • ubuntu•linux-allwinner-5.19

    all

  • ubuntu•linux-aws

    all | all | all | all

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.15

    all

  • ubuntu•linux-aws-5.19

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    all

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-6.14

    all

  • ubuntu•linux-aws-6.17

    all

  • ubuntu•linux-aws-6.2

    all

  • ubuntu•linux-aws-6.5

    all

  • ubuntu•linux-aws-6.8

    all

  • ubuntu•linux-aws-fips

    all

  • ubuntu•linux-aws-hwe

    all

  • ubuntu•linux-azure

    all | all | all | all | all

  • ubuntu•linux-azure-4.15

    all

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.15

    all

  • ubuntu•linux-azure-5.19

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    all

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-6.11

    all

  • ubuntu•linux-azure-6.14

    all

  • ubuntu•linux-azure-6.17

    all

  • ubuntu•linux-azure-6.2

    all

  • ubuntu•linux-azure-6.5

    all

  • ubuntu•linux-azure-6.8

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all | all | all | all | all

  • ubuntu•linux-azure-fde-5.15

    all

  • ubuntu•linux-azure-fde-5.19

    all

  • ubuntu•linux-azure-fde-6.14

    all

  • ubuntu•linux-azure-fde-6.17

    all

Showing first 50 affected entries in server-rendered view.

References (7)