KVM: s390: pci: Fix NULL dereference on AIBV allocation failure (CVE-2026-80684) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80684

KVM: s390: pci: Fix NULL dereference on AIBV allocation failure

Answer in brief

CVE-2026-80684 records a Unknown severity vulnerability in KVM: s390: pci: Fix NULL dereference on AIBV allocation failure. The current sources do not mark it as known exploited. The current feed maps 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 28, 2026Updated Aug 28, 2026Source checked Aug 28, 2026First seen by HOL Aug 28, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. 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). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc <96099486b63985801c9c6ef22505e9aa635b2d20 \|\| >=3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc <0a95abe964400771ad82b027d7b84a0d183cd0db \|\| >=3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc <df947d85e164a50a29d43a96e814f69ab1d0f7ed \|\| >=3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc <e137d082325bbcae780087b57501d38585e625d9 \|\| >=3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc <d1a103dc9016c25e7423ce5841a5cc2df76d59f3 \|\| >=3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc <8bf09b9b7d3232806df95f409581f8a9fd99a3fa	96099486b63985801c9c6ef22505e9aa635b2d20, 0a95abe964400771ad82b027d7b84a0d183cd0db, df947d85e164a50a29d43a96e814f69ab1d0f7ed, e137d082325bbcae780087b57501d38585e625d9, d1a103dc9016c25e7423ce5841a5cc2df76d59f3, 8bf09b9b7d3232806df95f409581f8a9fd99a3fa
Linux/Linuxgeneric	6.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 96099486b63985801c9c6ef22505e9aa635b2d20 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 28, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix NULL dereference on AIBV allocation failure The airq_iv_create() can return NULL on failure, but the return value was never checked. If it fails, zdev->aibv will be NULL and fail when dereferenced in kvm_zpci_set_airq(). Add a NULL check and free the previously allocated AISB bit and zdev->aisb on failure.

Quoted source text, attributed separately from HOL analysis.