CVE-2026-80609

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-28. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 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:

qede: fix out-of-bounds check for cqe->len_list[]

Move index check before element access.

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
41%
KEV
Not listed

Published

August 28, 2026

Last Modified

August 29, 2026

Advisory Details (7)

Auto-updated Aug 29, 2026
No patch confirmed yet.
generic

qede: fix out-of-bounds check for cqe->len_list[] - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f9ba47fce5932c15891c89c60e76dfaca919cb8d
generic

qede: fix out-of-bounds check for cqe->len_list[] - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e30af53dca803893a29eb3bbe0539752ba435410
generic

qede: fix out-of-bounds check for cqe->len_list[] - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bd3a6a083b408e96437dbd86ff543ba9ec3a788b
generic

qede: fix out-of-bounds check for cqe->len_list[] - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b17751a2ebc4aef3ce6be6f71ee8df92bf5ddfcd
generic

qede: fix out-of-bounds check for cqe->len_list[] - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6d46ab395803f162cdc50e8d346e5f1a4e766771
generic

qede: fix out-of-bounds check for cqe->len_list[] - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6d203bdd227fca1787f8a80cf84b990936633c5a
generic

qede: fix out-of-bounds check for cqe->len_list[] - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1aacefd074b5dcc99b8dbcd73e1c963ed5010110

Vendor Advisories for CVE-2026-80609(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 17× in last 7d / 17× 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 03:11 UTCEG score recompute
  2. 2026-08-30 03:11 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-29 23:15 UTCGHSA enrichment
  5. 2026-08-29 19:18 UTCGHSA enrichment
  6. 2026-08-29 15:21 UTCGHSA enrichment
  7. 2026-08-29 11:24 UTCEG score recompute
  8. 2026-08-29 11:24 UTCGHSA enrichment
  9. 2026-08-29 07:27 UTCEG score recompute
  10. 2026-08-29 07:27 UTCGHSA enrichment
  11. 2026-08-29 06:37 UTCEG score recompute▲ 9.80
  12. 2026-08-29 06:37 UTCGHSA enrichment
  13. 2026-08-29 06:33 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  14. 2026-08-28 21:42 UTCEPSS rescore
  15. 2026-08-28 08:20 UTCNVD update
  16. 2026-08-28 07:36 UTCEG score recompute
  17. 2026-08-28 07:32 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-80609?
CVE-2026-80609 is a critical vulnerability published on August 28, 2026. In the Linux kernel, the following vulnerability has been resolved: qede: fix out-of-bounds check for cqe->len_list[] Move index check before element access.
When was CVE-2026-80609 disclosed?
CVE-2026-80609 was first published in the National Vulnerability Database on August 28, 2026, with the most recent update on August 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-80609 actively exploited?
CVE-2026-80609 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 58.8% of all scored CVEs.
What is the CVSS score of CVE-2026-80609?
CVE-2026-80609 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-80609?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80609, 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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