CVE-2026-80547

HIGHPre-NVD 8.88.8
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-27. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: 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:

s390/vfio_ccw: Implement a crw lock

Unlike the channel_program struct, which covers synchronous I/O submissions and asynchronous interrupts, the CRW region relies exclusively on asynchronous events coming from hardware.

Implement a lock to manage the list of those payloads, to ensure they are read cohesively.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity88% × 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 (4)

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

s390/vfio_ccw: Implement a crw lock - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c76c4ee72bfc3824f4f491f18ed0323bf2e2daf9
generic

s390/vfio_ccw: Implement a crw lock - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7902be374cbfc11c3435e1e87bf22195bf06a558
generic

s390/vfio_ccw: Implement a crw lock - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/49fa26b0df009dc1f420980bd71780e70615b83b
generic

s390/vfio_ccw: Implement a crw lock - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/16b0798024c0e9117e395829ddbbe70981c79d9c

Vendor Advisories for CVE-2026-80547(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 20× in last 7d / 20× 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 01:47 UTCEG score recompute
  2. 2026-08-30 01:47 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-29 13:45 UTCGHSA enrichment
  5. 2026-08-29 01:44 UTCEG score recompute
  6. 2026-08-29 01:43 UTCGHSA enrichment
  7. 2026-08-28 21:42 UTCEPSS rescore
  8. 2026-08-28 13:38 UTCGHSA enrichment
  9. 2026-08-28 01:34 UTCEG score recompute
  10. 2026-08-28 01:34 UTCGHSA enrichment
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-27 13:33 UTCEG score recompute
  13. 2026-08-27 13:33 UTCGHSA enrichment
  14. 2026-08-27 13:00 UTCEG score recompute
  15. 2026-08-27 13:00 UTCGHSA enrichment
  16. 2026-08-27 06:20 UTCEG score recompute 8.80
  17. 2026-08-27 06:11 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  18. 2026-08-26 15:43 UTCNVD update
  19. 2026-08-26 14:43 UTCEG score recompute
  20. 2026-08-26 14:41 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-80547?
CVE-2026-80547 is a high vulnerability published on August 26, 2026. In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Implement a crw lock Unlike the channel_program struct, which covers synchronous I/O submissions and asynchronous interrupts, the CRW region relies exclusively on asynchronous events coming from hardware. Implement a…
When was CVE-2026-80547 disclosed?
CVE-2026-80547 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-2026-80547 actively exploited?
CVE-2026-80547 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 97.2% of all scored CVEs.
What is the CVSS score of CVE-2026-80547?
CVE-2026-80547 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-80547?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80547, 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-2026-80547

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