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  4. CVE 2026 80547 s390vfioccw implement a crw lock
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Back to active CVEs
High · CVSS 8.8CVE-2026-80547

s390/vfio_ccw: Implement a crw lockCVE-2026-80547

Answer in brief

CVE-2026-80547 records a High severity (CVSS 8.8) vulnerability in s390/vfio_ccw: Implement a crw lock. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 26, 2026Updated Aug 27, 2026Source checked Oct 10, 2026First seen by HOL Aug 26, 2026Material review Aug 27, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.8
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=3f02cb2fd9d2d9e8762102886e3e4b51285797ee <49fa26b0df009dc1f420980bd71780e70615b83b || >=3f02cb2fd9d2d9e8762102886e3e4b51285797ee <7902be374cbfc11c3435e1e87bf22195bf06a558 || >=3f02cb2fd9d2d9e8762102886e3e4b51285797ee <c76c4ee72bfc3824f4f491f18ed0323bf2e2daf9 || >=3f02cb2fd9d2d9e8762102886e3e4b51285797ee <16b0798024c0e9117e395829ddbbe70981c79d9c49fa26b0df009dc1f420980bd71780e70615b83b, 7902be374cbfc11c3435e1e87bf22195bf06a558, c76c4ee72bfc3824f4f491f18ed0323bf2e2daf9, 16b0798024c0e9117e395829ddbbe70981c79d9c
Linux/Linuxgeneric5.8Not reported
Linux/Linuxgeneric>=3f02cb2fd9d2d9e8762102886e3e4b51285797ee <3c94d4179bcc19e01b28db634c07a58b28116209 || >=3f02cb2fd9d2d9e8762102886e3e4b51285797ee <0edd222730a9d7ec98368aaf1d40ee2d8d862e61 || >=3f02cb2fd9d2d9e8762102886e3e4b51285797ee <a3d60ae24183eee352c8e87a0ff94c97cd87f156 || >=3f02cb2fd9d2d9e8762102886e3e4b51285797ee <49fa26b0df009dc1f420980bd71780e70615b83b || >=3f02cb2fd9d2d9e8762102886e3e4b51285797ee <7902be374cbfc11c3435e1e87bf22195bf06a558 || >=3f02cb2fd9d2d9e8762102886e3e4b51285797ee <c76c4ee72bfc3824f4f491f18ed0323bf2e2daf9 || >=3f02cb2fd9d2d9e8762102886e3e4b51285797ee <16b0798024c0e9117e395829ddbbe70981c79d9c3c94d4179bcc19e01b28db634c07a58b28116209, 0edd222730a9d7ec98368aaf1d40ee2d8d862e61, a3d60ae24183eee352c8e87a0ff94c97cd87f156, 49fa26b0df009dc1f420980bd71780e70615b83b, 7902be374cbfc11c3435e1e87bf22195bf06a558, c76c4ee72bfc3824f4f491f18ed0323bf2e2daf9, 16b0798024c0e9117e395829ddbbe70981c79d9c

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 49fa26b0df009dc1f420980bd71780e70615b83b; Linux/Linux to 3c94d4179bcc19e01b28db634c07a58b28116209 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 27, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 26, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 10, 2026
References
7 linked sources
Open source record