CVE-2026-31692

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-04-30. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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 v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

April 30, 2026

Last Modified

May 6, 2026

Advisory Details (3)

Auto-updated May 6, 2026
No patch confirmed yet.
generic

rtnetlink: add missing netlink_ns_capable() check for peer netns - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d04cc16d3624218a5458b2b664ae431f1b3b334d
generic

rtnetlink: add missing netlink_ns_capable() check for peer netns - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7b735ef81286007794a227ce2539419479c02a5f
generic

rtnetlink: add missing netlink_ns_capable() check for peer netns - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0975b64ffb34560042090a5986c3a02e6c80f36f

Vendor Advisories for CVE-2026-31692(5)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:4.18.0-553.150.1.el8_102026-07-31redhat
redhatkernel-rt-0:4.18.0-553.150.1.rt7.491.el8_102026-07-31redhat
redhatkernel-0:6.12.0-211.39.1.el10_22026-07-24redhat
linuxKernel @ 6.18.24—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (496 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (350 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (174 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (129 versions)6.19.14-1—

Data Freshness Timeline

(refreshed 7× in last 7d / 27× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 213 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-17 19:30 UTCEPSS rescore
  4. 2026-09-16 14:08 UTCEPSS rescore
  5. 2026-09-16 05:15 UTCEPSS rescore
  6. 2026-09-13 16:47 UTCEPSS rescore
  7. 2026-09-12 15:01 UTCEPSS rescore
  8. 2026-09-11 14:52 UTCEPSS rescore
  9. 2026-09-10 09:34 UTCEPSS rescore
  10. 2026-09-08 22:00 UTCEPSS rescore
  11. 2026-09-07 16:01 UTCEPSS rescore
  12. 2026-09-06 13:47 UTCEPSS rescore
  13. 2026-09-06 13:47 UTCEPSS rescore
  14. 2026-09-04 05:06 UTCEPSS rescore
  15. 2026-09-04 01:16 UTCOSV refresh
  16. 2026-09-02 14:11 UTCEPSS rescore
  17. 2026-09-01 13:53 UTCEPSS rescore
  18. 2026-09-01 04:39 UTCEPSS rescore
  19. 2026-09-01 04:39 UTCEPSS rescore
  20. 2026-08-30 19:17 UTCEPSS rescore
  21. 2026-08-28 21:41 UTCEPSS rescore
  22. 2026-08-27 14:25 UTCEPSS rescore
  23. 2026-08-26 14:46 UTCEPSS rescore
  24. 2026-08-24 14:17 UTCEPSS rescore
  25. 2026-08-21 23:49 UTCEPSS rescore
Show 75 more
  1. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 22:55 UTCEPSS rescore
  3. 2026-08-19 17:03 UTCEPSS rescore
  4. 2026-08-18 13:48 UTCEPSS rescore
  5. 2026-08-17 13:50 UTCEG score recompute
  6. 2026-08-17 13:50 UTCVendor advisory
  7. 2026-08-17 13:50 UTCGHSA enrichment
  8. 2026-08-16 14:56 UTCEPSS rescore
  9. 2026-08-16 05:22 UTCEG score recompute
  10. 2026-08-16 05:22 UTCVendor advisory
  11. 2026-08-16 05:22 UTCGHSA enrichment
  12. 2026-08-16 02:14 UTCEPSS rescore
  13. 2026-08-15 01:40 UTCEG score recompute
  14. 2026-08-15 01:40 UTCVendor advisory
  15. 2026-08-15 01:40 UTCGHSA enrichment
  16. 2026-08-15 01:30 UTCEPSS rescore
  17. 2026-08-14 03:51 UTCEG score recompute
  18. 2026-08-14 03:51 UTCVendor advisory
  19. 2026-08-14 03:50 UTCGHSA enrichment
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-12 21:34 UTCEG score recompute
  22. 2026-08-12 21:34 UTCVendor advisory
  23. 2026-08-12 21:34 UTCGHSA enrichment
  24. 2026-08-12 13:50 UTCEPSS rescore
  25. 2026-08-11 23:45 UTCEG score recompute
  26. 2026-08-11 23:45 UTCVendor advisory
  27. 2026-08-11 23:45 UTCGHSA enrichment
  28. 2026-08-11 01:52 UTCEG score recompute
  29. 2026-08-11 01:52 UTCVendor advisory
  30. 2026-08-11 01:52 UTCGHSA enrichment
  31. 2026-08-11 00:00 UTCEPSS rescore
  32. 2026-08-10 00:50 UTCVendor advisory
  33. 2026-08-10 00:50 UTCGHSA enrichment
  34. 2026-08-09 03:02 UTCEG score recompute
  35. 2026-08-09 03:02 UTCVendor advisory
  36. 2026-08-09 03:02 UTCGHSA enrichment
  37. 2026-08-08 16:37 UTCEPSS rescore
  38. 2026-08-07 18:17 UTCEG score recompute
  39. 2026-08-07 18:17 UTCVendor advisory
  40. 2026-08-07 18:17 UTCGHSA enrichment
  41. 2026-08-06 20:28 UTCEG score recompute
  42. 2026-08-06 20:28 UTCVendor advisory
  43. 2026-08-06 20:28 UTCGHSA enrichment
  44. 2026-08-06 13:46 UTCEPSS rescore
  45. 2026-08-05 22:39 UTCEG score recompute
  46. 2026-08-05 22:39 UTCVendor advisory
  47. 2026-08-05 22:39 UTCGHSA enrichment
  48. 2026-08-05 19:17 UTCEPSS rescore
  49. 2026-08-04 15:10 UTCEPSS rescore
  50. 2026-08-04 10:38 UTCEPSS rescore
  51. 2026-08-03 20:29 UTCEG score recompute
  52. 2026-08-03 20:29 UTCVendor advisory
  53. 2026-08-03 20:29 UTCGHSA enrichment
  54. 2026-08-03 10:36 UTCEPSS rescore
  55. 2026-08-02 05:46 UTCEG score recompute
  56. 2026-08-02 05:46 UTCVendor advisory
  57. 2026-08-02 05:46 UTCGHSA enrichment
  58. 2026-08-02 02:27 UTCEPSS rescore
  59. 2026-08-01 04:16 UTCEPSS rescore
  60. 2026-07-30 16:28 UTCEPSS rescore
  61. 2026-07-30 01:30 UTCEPSS rescore
  62. 2026-07-28 15:36 UTCEPSS rescore
  63. 2026-07-26 14:54 UTCEPSS rescore
  64. 2026-07-26 14:54 UTCEPSS rescore
  65. 2026-07-25 14:18 UTCEPSS rescore
  66. 2026-07-25 14:17 UTCEPSS rescore
  67. 2026-07-24 14:17 UTCEPSS rescore
  68. 2026-07-23 14:18 UTCEPSS rescore
  69. 2026-07-23 14:18 UTCEPSS rescore
  70. 2026-07-23 03:08 UTCEG score recompute
  71. 2026-07-22 14:08 UTCEPSS rescore
  72. 2026-07-22 14:08 UTCEPSS rescore
  73. 2026-07-21 15:24 UTCEPSS rescore
  74. 2026-07-21 15:24 UTCEPSS rescore
  75. 2026-07-20 17:08 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-31692?
CVE-2026-31692 is a medium vulnerability published on April 30, 2026. In the Linux kernel, the following vulnerability has been resolved: rtnetlink: add missing netlinknscapable() check for peer netns rtnlnewlink() lacks a CAPNET_ADMIN capability check on the peer network namespace when creating paired devices (veth, vxcan, netkit). This allows an unprivileged user…
When was CVE-2026-31692 disclosed?
CVE-2026-31692 was first published in the National Vulnerability Database on April 30, 2026, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31692 actively exploited?
CVE-2026-31692 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.0% of all scored CVEs.
What is the CVSS score of CVE-2026-31692?
CVE-2026-31692 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-31692?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31692, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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