CVE-2026-68161

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-10. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

sctp: close UDP tunnel sockets during netns teardown

proc_sctp_do_udp_port() starts per-net SCTP UDP tunneling sockets when net.sctp.udp_port is set, and stops/restarts them when the sysctl value changes. The netns exit path does not stop these sockets, so a namespace can be torn down while its SCTP UDP tunnel sockets are still installed.

Close the UDP tunnel sockets from sctp_ctrlsock_exit() after unregistering the per-net sysctl table. This prevents new sysctl writes from racing in while the sockets are being released, and closes the sockets before the control socket is destroyed.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 17, 2026

Advisory Details (5)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

sctp: close UDP tunnel sockets during netns teardown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ffb2bd7ade36ec4da32c46a6eddbf4515316d08c
generic

sctp: close UDP tunnel sockets during netns teardown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c6eb2d615210b80339548ab07c0230edaab9a6c7
generic

sctp: close UDP tunnel sockets during netns teardown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8ff78591d309c50a4fdab683b68dd8d512a270dd
generic

sctp: close UDP tunnel sockets during netns teardown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3bf0e349cbb4f975f35eb22753acc346b89c66a0
generic

sctp: close UDP tunnel sockets during netns teardown - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/37ff9794be48d0caa37687e04d09675f9c849121

Vendor Advisories for CVE-2026-68161(2)

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

Data Freshness Timeline

(refreshed 63× in last 7d / 69× 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.

  1. 2026-08-20 18:09 UTCGHSA enrichment
  2. 2026-08-20 14:17 UTCGHSA enrichment
  3. 2026-08-20 10:08 UTCGHSA enrichment
  4. 2026-08-20 06:18 UTCGHSA enrichment
  5. 2026-08-20 02:24 UTCGHSA enrichment
  6. 2026-08-19 22:34 UTCGHSA enrichment
  7. 2026-08-19 18:44 UTCEG score recompute
  8. 2026-08-19 18:44 UTCGHSA enrichment
  9. 2026-08-19 17:04 UTCEPSS rescore
  10. 2026-08-19 13:04 UTCGHSA enrichment
  11. 2026-08-19 09:10 UTCGHSA enrichment
  12. 2026-08-19 05:20 UTCGHSA enrichment
  13. 2026-08-19 01:30 UTCGHSA enrichment
  14. 2026-08-18 21:40 UTCGHSA enrichment
  15. 2026-08-18 17:25 UTCEG score recompute
  16. 2026-08-18 17:25 UTCGHSA enrichment
  17. 2026-08-18 13:48 UTCEPSS rescore
  18. 2026-08-18 12:46 UTCGHSA enrichment
  19. 2026-08-18 08:38 UTCGHSA enrichment
  20. 2026-08-18 04:46 UTCGHSA enrichment
  21. 2026-08-18 00:56 UTCGHSA enrichment
  22. 2026-08-17 21:01 UTCGHSA enrichment
  23. 2026-08-17 17:11 UTCEG score recompute
  24. 2026-08-17 17:11 UTCGHSA enrichment
  25. 2026-08-17 13:47 UTCEPSS rescore
Show 44 more
  1. 2026-08-17 13:20 UTCGHSA enrichment
  2. 2026-08-17 09:30 UTCGHSA enrichment
  3. 2026-08-17 05:40 UTCEG score recompute
  4. 2026-08-17 05:40 UTCGHSA enrichment
  5. 2026-08-17 05:10 UTCEG score recompute
  6. 2026-08-17 05:10 UTCGHSA enrichment
  7. 2026-08-17 04:52 UTCGHSA enrichment
  8. 2026-08-17 01:02 UTCGHSA enrichment
  9. 2026-08-16 21:12 UTCGHSA enrichment
  10. 2026-08-16 17:22 UTCEG score recompute
  11. 2026-08-16 17:22 UTCGHSA enrichment
  12. 2026-08-16 14:56 UTCEPSS rescore
  13. 2026-08-16 13:32 UTCGHSA enrichment
  14. 2026-08-16 09:41 UTCGHSA enrichment
  15. 2026-08-16 05:51 UTCEG score recompute
  16. 2026-08-16 05:51 UTCGHSA enrichment
  17. 2026-08-16 02:02 UTCGHSA enrichment
  18. 2026-08-15 22:12 UTCGHSA enrichment
  19. 2026-08-15 18:22 UTCGHSA enrichment
  20. 2026-08-15 14:32 UTCGHSA enrichment
  21. 2026-08-15 10:42 UTCGHSA enrichment
  22. 2026-08-15 06:52 UTCGHSA enrichment
  23. 2026-08-15 02:19 UTCEG score recompute
  24. 2026-08-15 02:19 UTCGHSA enrichment
  25. 2026-08-15 01:30 UTCEPSS rescore
  26. 2026-08-14 22:30 UTCGHSA enrichment
  27. 2026-08-14 18:40 UTCGHSA enrichment
  28. 2026-08-14 14:50 UTCGHSA enrichment
  29. 2026-08-14 11:00 UTCGHSA enrichment
  30. 2026-08-14 07:10 UTCGHSA enrichment
  31. 2026-08-14 03:20 UTCEG score recompute
  32. 2026-08-14 03:20 UTCGHSA enrichment
  33. 2026-08-13 23:30 UTCEG score recompute
  34. 2026-08-13 23:30 UTCGHSA enrichment
  35. 2026-08-13 22:45 UTCEG score recompute▲ 9.80
  36. 2026-08-13 22:45 UTCGHSA enrichment
  37. 2026-08-13 22:44 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  38. 2026-08-13 22:00 UTCEPSS rescore
  39. 2026-08-13 13:49 UTCEG score recompute
  40. 2026-08-13 13:49 UTCGHSA enrichment
  41. 2026-08-12 13:51 UTCEPSS rescore
  42. 2026-08-10 13:24 UTCNVD update
  43. 2026-08-10 12:20 UTCEG score recompute
  44. 2026-08-10 12:17 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-68161?
CVE-2026-68161 is a critical vulnerability published on August 10, 2026. In the Linux kernel, the following vulnerability has been resolved: sctp: close UDP tunnel sockets during netns teardown procsctpdoudpport() starts per-net SCTP UDP tunneling sockets when net.sctp.udp_port is set, and stops/restarts them when the sysctl value changes. The netns exit path does not…
When was CVE-2026-68161 disclosed?
CVE-2026-68161 was first published in the National Vulnerability Database on August 10, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-68161 actively exploited?
CVE-2026-68161 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.7% of all scored CVEs.
What is the CVSS score of CVE-2026-68161?
CVE-2026-68161 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-68161?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68161, 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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