CVE-2026-74690

HIGHPre-NVD 8.48.4
EchelonGraph scoreHIGH confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-08-22. a secondary CVSS source baseline 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.4Exploit: 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:

s390/ism: Fix UAF of sba and ieq during ism_dev_exit()

A ism interrupt handler can be active in parallel with ism_dev_exit(), accessing freed data structures.

No new interrupts will be generated after unregister_ieq(). Drain ongoing interrupt handlers by free_irq(), before freeing ism data structures.

CVSS v3
8.4
EG Score
8.4(high)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity84% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

August 22, 2026

Last Modified

August 25, 2026

Advisory Details (3)

Auto-updated Aug 25, 2026
No patch confirmed yet.
generic

s390/ism: Fix UAF of sba and ieq during ism_dev_exit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b1896543ce59c4258625a35cf41e23a9a1f80ea2
generic

s390/ism: Fix UAF of sba and ieq during ism_dev_exit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/774394d27930ec4cf4cb3eed8ab6a4d20cb2430a
generic

s390/ism: Fix UAF of sba and ieq during ism_dev_exit() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fc3021284050ecb3bba8a7851340cedcb5037928

Vendor Advisories for CVE-2026-74690(1)

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 25× in last 7d / 28× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 23:06 UTCGHSA enrichment
  3. 2026-08-29 11:57 UTCGHSA enrichment
  4. 2026-08-29 00:43 UTCEG score recompute
  5. 2026-08-29 00:43 UTCGHSA enrichment
  6. 2026-08-28 21:42 UTCEPSS rescore
  7. 2026-08-28 12:54 UTCGHSA enrichment
  8. 2026-08-28 01:42 UTCGHSA enrichment
  9. 2026-08-27 14:33 UTCEG score recompute
  10. 2026-08-27 14:33 UTCGHSA enrichment
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-27 03:24 UTCGHSA enrichment
  13. 2026-08-26 16:13 UTCEG score recompute
  14. 2026-08-26 16:13 UTCGHSA enrichment
  15. 2026-08-26 14:47 UTCEPSS rescore
  16. 2026-08-26 04:47 UTCGHSA enrichment
  17. 2026-08-25 17:38 UTCEG score recompute
  18. 2026-08-25 17:38 UTCGHSA enrichment
  19. 2026-08-25 13:49 UTCEPSS rescore
  20. 2026-08-25 06:29 UTCEG score recompute
  21. 2026-08-25 06:29 UTCGHSA enrichment
  22. 2026-08-25 05:55 UTCEG score recompute 8.40
  23. 2026-08-25 05:55 UTCGHSA enrichment
  24. 2026-08-25 05:55 UTCMITRE cvelistV5CVSS v3 → 8.4 · severity → HIGH
  25. 2026-08-24 14:18 UTCEPSS rescore
Show 3 more
  1. 2026-08-22 16:24 UTCNVD update
  2. 2026-08-22 15:40 UTCEG score recompute
  3. 2026-08-22 15:35 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74690?
CVE-2026-74690 is a high vulnerability published on August 22, 2026. In the Linux kernel, the following vulnerability has been resolved: s390/ism: Fix UAF of sba and ieq during ismdevexit() A ism interrupt handler can be active in parallel with ismdevexit(), accessing freed data structures. No new interrupts will be generated after unregister_ieq(). Drain ongoing…
When was CVE-2026-74690 disclosed?
CVE-2026-74690 was first published in the National Vulnerability Database on August 22, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-74690 actively exploited?
CVE-2026-74690 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 96.3% of all scored CVEs.
What is the CVSS score of CVE-2026-74690?
CVE-2026-74690 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2026-74690?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74690, 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

Explore the affected products and dependency analysis for CVE-2026-74690

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