CVE-2026-74309

CRITICALPre-NVD 10.010.0
EchelonGraph scoreHIGH confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-15. a secondary CVSS source baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 10.0Exploit: 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:

vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler

Look up the IRQ index in oct_hw->irqs instead of assuming irq - irqs[0]. This supports non-contiguous IRQ numbers and avoids incorrect ring indexing when irqs[0] is not the base.

CVSS v3
10.0
EG Score
10.0(high)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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
Severity100% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 17, 2026

Advisory Details (3)

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

vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c6c7eae5de798442987619434171ac886035d57c
generic

vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3ef0cfa77a3d526591be069850d186c255e3f0cc
generic

vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0d21a1d6375a05274291e32c1ab7cd57dbb69513

Vendor Advisories for CVE-2026-74309(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 46× in last 7d / 46× 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. 2026-08-21 04:28 UTCGHSA enrichment
  2. 2026-08-21 00:16 UTCEG score recompute
  3. 2026-08-21 00:15 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 20:03 UTCGHSA enrichment
  6. 2026-08-20 15:51 UTCGHSA enrichment
  7. 2026-08-20 11:39 UTCGHSA enrichment
  8. 2026-08-20 07:26 UTCGHSA enrichment
  9. 2026-08-20 03:14 UTCGHSA enrichment
  10. 2026-08-19 22:59 UTCGHSA enrichment
  11. 2026-08-19 18:47 UTCEG score recompute
  12. 2026-08-19 18:47 UTCGHSA enrichment
  13. 2026-08-19 17:04 UTCEPSS rescore
  14. 2026-08-19 14:34 UTCGHSA enrichment
  15. 2026-08-19 10:20 UTCGHSA enrichment
  16. 2026-08-19 06:07 UTCGHSA enrichment
  17. 2026-08-19 01:50 UTCGHSA enrichment
  18. 2026-08-18 21:37 UTCGHSA enrichment
  19. 2026-08-18 17:00 UTCEG score recompute
  20. 2026-08-18 17:00 UTCGHSA enrichment
  21. 2026-08-18 13:49 UTCEPSS rescore
  22. 2026-08-18 13:49 UTCEPSS rescore
  23. 2026-08-18 11:59 UTCGHSA enrichment
  24. 2026-08-18 07:44 UTCGHSA enrichment
  25. 2026-08-18 03:31 UTCGHSA enrichment
Show 21 more
  1. 2026-08-17 23:19 UTCGHSA enrichment
  2. 2026-08-17 19:06 UTCGHSA enrichment
  3. 2026-08-17 14:51 UTCEG score recompute
  4. 2026-08-17 14:51 UTCGHSA enrichment
  5. 2026-08-17 13:47 UTCEPSS rescore
  6. 2026-08-17 10:39 UTCEG score recompute
  7. 2026-08-17 10:39 UTCGHSA enrichment
  8. 2026-08-17 06:27 UTCEG score recompute
  9. 2026-08-17 06:27 UTCGHSA enrichment
  10. 2026-08-17 05:56 UTCEG score recompute 10.00
  11. 2026-08-17 05:56 UTCGHSA enrichment
  12. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 10 · severity → CRITICAL
  13. 2026-08-17 05:27 UTCEG score recompute
  14. 2026-08-17 05:27 UTCGHSA enrichment
  15. 2026-08-17 05:24 UTCMITRE cvelistV5
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 02:15 UTCEPSS rescore
  19. 2026-08-15 06:23 UTCNVD update
  20. 2026-08-15 06:16 UTCEG score recompute
  21. 2026-08-15 06:12 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-74309?
CVE-2026-74309 is a critical vulnerability published on August 15, 2026. In the Linux kernel, the following vulnerability has been resolved: vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler Look up the IRQ index in oct_hw->irqs instead of assuming irq - irqs[0]. This supports non-contiguous IRQ numbers and avoids incorrect ring indexing when irqs[0] is not…
When was CVE-2026-74309 disclosed?
CVE-2026-74309 was first published in the National Vulnerability Database on August 15, 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-2026-74309 actively exploited?
CVE-2026-74309 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 62.5% of all scored CVEs.
What is the CVSS score of CVE-2026-74309?
CVE-2026-74309 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-74309?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-74309, 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-2026-74309

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