CVE-2026-68141

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-10. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: 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:

net/af_iucv: fix NULL deref in afiucv_hs_callback_syn()

afiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC. If the allocation fails, nsk is NULL.

The connection-refused path is entered when the listen state check fails, the accept backlog is full, or nsk is NULL. The code unconditionally calls iucv_sock_kill(nsk) in that path.

iucv_sock_kill() does not accept a NULL socket pointer and immediately dereferences sk via sock_flag(sk, SOCK_ZAPPED). When nsk is NULL, calling iucv_sock_kill(nsk) results in a NULL pointer dereference.

Only call iucv_sock_kill() when a child socket was successfully allocated.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

August 10, 2026

Last Modified

August 19, 2026

Advisory Details (5)

Auto-updated Aug 14, 2026
No patch confirmed yet.
generic

net/af_iucv: fix NULL deref in afiucv_hs_callback_syn() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8bb111f87ded6acb9837ec9b45d6f02cda94c51f
generic

net/af_iucv: fix NULL deref in afiucv_hs_callback_syn() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/47a5116e56a6b6fe1e909f244e39cd0fc26ceee4
generic

net/af_iucv: fix NULL deref in afiucv_hs_callback_syn() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/46453b16f38ec7147351f7447e2aec6ea330f7b3
generic

net/af_iucv: fix NULL deref in afiucv_hs_callback_syn() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/33736ff5e7c97d3348ce812e8bd2e125d840743c
generic

net/af_iucv: fix NULL deref in afiucv_hs_callback_syn() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0e857185591fe79934427c9c0c1c31dc776be134

Vendor Advisories for CVE-2026-68141(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 31× in last 7d / 42× 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 22:56 UTCEPSS rescore
  2. 2026-08-20 19:31 UTCGHSA enrichment
  3. 2026-08-20 06:29 UTCGHSA enrichment
  4. 2026-08-19 17:26 UTCEG score recompute
  5. 2026-08-19 17:26 UTCGHSA enrichment
  6. 2026-08-19 17:04 UTCEPSS rescore
  7. 2026-08-19 16:55 UTCEG score recompute
  8. 2026-08-19 16:55 UTCGHSA enrichment
  9. 2026-08-19 10:42 UTCGHSA enrichment
  10. 2026-08-18 21:40 UTCEG score recompute
  11. 2026-08-18 21:40 UTCGHSA enrichment
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-18 08:26 UTCGHSA enrichment
  14. 2026-08-17 19:21 UTCEG score recompute
  15. 2026-08-17 19:21 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 05:40 UTCEG score recompute
  18. 2026-08-17 05:40 UTCGHSA enrichment
  19. 2026-08-17 05:11 UTCEG score recompute
  20. 2026-08-17 05:11 UTCGHSA enrichment
  21. 2026-08-16 16:42 UTCEG score recompute
  22. 2026-08-16 16:42 UTCGHSA enrichment
  23. 2026-08-16 14:56 UTCEPSS rescore
  24. 2026-08-16 03:40 UTCEG score recompute
  25. 2026-08-16 03:40 UTCGHSA enrichment
Show 17 more
  1. 2026-08-15 14:38 UTCGHSA enrichment
  2. 2026-08-15 01:35 UTCEG score recompute
  3. 2026-08-15 01:35 UTCGHSA enrichment
  4. 2026-08-15 01:30 UTCEPSS rescore
  5. 2026-08-14 12:33 UTCEG score recompute
  6. 2026-08-14 12:33 UTCGHSA enrichment
  7. 2026-08-13 23:31 UTCEG score recompute
  8. 2026-08-13 23:31 UTCGHSA enrichment
  9. 2026-08-13 22:46 UTCEG score recompute▲ 7.50
  10. 2026-08-13 22:45 UTCGHSA enrichment
  11. 2026-08-13 22:44 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  12. 2026-08-13 22:00 UTCEPSS rescore
  13. 2026-08-13 08:39 UTCEG score recompute
  14. 2026-08-13 08:39 UTCGHSA enrichment
  15. 2026-08-10 13:24 UTCNVD update
  16. 2026-08-10 12:21 UTCEG score recompute
  17. 2026-08-10 12:17 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-68141?
CVE-2026-68141 is a high vulnerability published on August 10, 2026. In the Linux kernel, the following vulnerability has been resolved: net/afiucv: fix NULL deref in afiucvhscallbacksyn() afiucvhscallbacksyn() allocates the child socket with GFPATOMIC. If the allocation fails, nsk is NULL. The connection-refused path is entered when the listen state check fails,…
When was CVE-2026-68141 disclosed?
CVE-2026-68141 was first published in the National Vulnerability Database on August 10, 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-2026-68141 actively exploited?
CVE-2026-68141 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 57.4% of all scored CVEs.
What is the CVSS score of CVE-2026-68141?
CVE-2026-68141 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-68141?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-68141, 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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