CVE-2026-80549

HIGHPre-NVD 8.28.2—
EchelonGraph scoreHIGH confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-08-27. a secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: 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/vfio_ccw: Move cp cleanup out of not operational

The fsm_notoper() routine is called when the device has been lost, and is (by definition) no longer operational. Since this can happen asynchronously from the normal behavior of the driver, the cleanup may happen when holding other locks in the calling sequence (notably, the cio subchannel lock).

Push the cleanup of the private->cp resources to a workqueue, where it can be done out from under that lock sequence and a future patch can safely manage the locking requirements.

CVSS v3
8.2
EG Score
8.2(high)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 26, 2026

Last Modified

August 27, 2026

Advisory Details (5)

Auto-updated Aug 27, 2026
No patch confirmed yet.
generic

s390/vfio_ccw: Move cp cleanup out of not operational - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f98a9890ca42f4223d2d4c50e0660af3e012fcb4
generic

s390/vfio_ccw: Move cp cleanup out of not operational - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/af1759d8e6e6da9ba94f30a2f92546f406899aa7
generic

s390/vfio_ccw: Move cp cleanup out of not operational - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/56100baa0eb7055b1026dfa73e696e8066ff71fd
generic

s390/vfio_ccw: Move cp cleanup out of not operational - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4e3301e2a651d742c05914f6074a25b8e41bce19
generic

s390/vfio_ccw: Move cp cleanup out of not operational - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0c11f61a876ed6fcca53d442ed3f33ea8362a0f9

Vendor Advisories for CVE-2026-80549(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 19× in last 7d / 19× 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 21:47 UTCGHSA enrichment
  3. 2026-08-29 10:53 UTCGHSA enrichment
  4. 2026-08-28 23:58 UTCEG score recompute
  5. 2026-08-28 23:58 UTCGHSA enrichment
  6. 2026-08-28 21:42 UTCEPSS rescore
  7. 2026-08-28 11:39 UTCGHSA enrichment
  8. 2026-08-28 00:44 UTCEG score recompute
  9. 2026-08-28 00:44 UTCGHSA enrichment
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-27 13:33 UTCEG score recompute
  12. 2026-08-27 13:33 UTCGHSA enrichment
  13. 2026-08-27 13:00 UTCEG score recompute
  14. 2026-08-27 13:00 UTCGHSA enrichment
  15. 2026-08-27 06:20 UTCEG score recompute▲ 8.20
  16. 2026-08-27 06:11 UTCMITRE cvelistV5CVSS v3 → 8.2 · severity → HIGH
  17. 2026-08-26 15:43 UTCNVD update
  18. 2026-08-26 14:43 UTCEG score recompute
  19. 2026-08-26 14:41 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-80549?
CVE-2026-80549 is a high vulnerability published on August 26, 2026. In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Move cp cleanup out of not operational The fsm_notoper() routine is called when the device has been lost, and is (by definition) no longer operational. Since this can happen asynchronously from the normal behavior of…
When was CVE-2026-80549 disclosed?
CVE-2026-80549 was first published in the National Vulnerability Database on August 26, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-80549 actively exploited?
CVE-2026-80549 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 96.8% of all scored CVEs.
What is the CVSS score of CVE-2026-80549?
CVE-2026-80549 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-80549?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80549, 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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