CVE-2026-68432

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-12. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

vxlan: require CAP_NET_ADMIN in the device netns for changelink

A tunnel changelink() operates on at most two netns, dev_net(dev) and the sticky underlay netns vxlan->net. They differ once the device is created in or moved to a netns other than the one the request runs in. The rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev), so a caller privileged there but not in vxlan->net can rewrite a vxlan device whose underlay lives in vxlan->net.

vxlan_changelink() validates and applies the new configuration against vxlan->net (vxlan_config_validate(vxlan->net, ...)) and can reopen the underlay socket in that netns, so the same reasoning as the tunnel changelink series applies here.

Gate vxlan_changelink() with rtnl_dev_link_net_capable(), at the top of the op before any attribute is parsed, matching ipgre_changelink() and the rest of the "require CAP_NET_ADMIN in the device netns for changelink" series.

Found by 0sec automated security-research tooling (https://0sec.ai).

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
44
EG Risk 44/100CISA SSVC

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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 12, 2026

Last Modified

August 19, 2026

Advisory Details (5)

Auto-updated Aug 14, 2026
Patch available.
generic

vxlan: require CAP_NET_ADMIN in the device netns for changelink - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e8ad0d311e225939a9a6c745d6cc384c7364ec87
generic

vxlan: require CAP_NET_ADMIN in the device netns for changelink - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b3793d7dccb192ffff29894d11824db6251acdd5
generic

vxlan: require CAP_NET_ADMIN in the device netns for changelink - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/730c7e5fea7f06e0cdf21c547222ec93234fd1d6
generic

vxlan: require CAP_NET_ADMIN in the device netns for changelink - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3a61bd9637f3d929aa846e4eb3d98b48c26fcb0e
generic

vxlan: require CAP_NET_ADMIN in the device netns for changelink - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/32d10c46bfde3e9b274e9e1bd6399d0ebea8f60f

Vendor Advisories for CVE-2026-68432(4)

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

Patch Availability(11)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-gcp-edge (5.15.0.1118.128~20.04.1) @ focal2026-10-06ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1114.120~20.04.1) @ focal2026-10-06ubuntu
ubuntulinux-tools-gcp-lts-22.04 (5.15.0.1118.115) @ jammy2026-10-06ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1080 (5.15.0-1080.84) @ jammy2026-10-06ubuntu
ubuntulinux-tools-azure-lts-26.04 (7.0.0-1017.17) @ resolute2026-10-06ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1015.15) @ resolute2026-10-06ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-38.38) @ resolute2026-10-06ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1036.39) @ noble2026-10-06ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1122.131) @ jammy2026-10-06ubuntu
redhatkernel-0:4.18.0-553.171.1.el8_102026-10-05redhat
redhatkernel-rt-0:4.18.0-553.171.1.rt7.512.el8_102026-10-05redhat

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 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (56 versions)
  • every version up to 6.1.187-1: fixed in 6.1.187-1
—
linux-6.126.12.100-1~deb12u1
  • every version up to 6.12.101-1~deb12u1: fixed in 6.12.101-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.12.96-1 (32 versions)
  • every version up to 6.12.101-1: fixed in 6.12.101-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (161 versions)
  • every version up to 7.1.6-1: fixed in 7.1.6-1
—

Additional Vendor Advisories

(9)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 28× in last 7d / 130× 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 258 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-68432?
CVE-2026-68432 is a high vulnerability published on August 12, 2026. In the Linux kernel, the following vulnerability has been resolved: vxlan: require CAPNETADMIN in the device netns for changelink A tunnel changelink() operates on at most two netns, dev_net(dev) and the sticky underlay netns vxlan->net. They differ once the device is created in or moved to a netns…
When was CVE-2026-68432 disclosed?
CVE-2026-68432 was first published on August 12, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68432 actively exploited?
CVE-2026-68432 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-68432?
CVE-2026-68432 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-68432?
A fix for CVE-2026-68432 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-68432 are linked in the Vendor Advisories panel on this page.

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