KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
Summary
| CVE | CVE-2026-80684 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-28 08:16:53 UTC |
| Updated | 2026-08-29 07:16:50 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 9.3 CRITICAL from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.001720000 probability, percentile 0.067660000 (date 2026-08-28)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 9.3 | CRITICAL | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 9.3 | CRITICAL | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
ChangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc 96099486b63985801c9c6ef22505e9aa635b2d20 git | Not specified |
| CNA | Linux | Linux | affected 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc 0a95abe964400771ad82b027d7b84a0d183cd0db git | Not specified |
| CNA | Linux | Linux | affected 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc df947d85e164a50a29d43a96e814f69ab1d0f7ed git | Not specified |
| CNA | Linux | Linux | affected 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc e137d082325bbcae780087b57501d38585e625d9 git | Not specified |
| CNA | Linux | Linux | affected 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc d1a103dc9016c25e7423ce5841a5cc2df76d59f3 git | Not specified |
| CNA | Linux | Linux | affected 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc 8bf09b9b7d3232806df95f409581f8a9fd99a3fa git | Not specified |
| CNA | Linux | Linux | affected 6.0 | Not specified |
| CNA | Linux | Linux | unaffected 6.0 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.183 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.151 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.103 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.44 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.8 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/e137d082325bbcae780087b57501d38585e625d9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/0a95abe964400771ad82b027d7b84a0d183cd0db | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/96099486b63985801c9c6ef22505e9aa635b2d20 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/8bf09b9b7d3232806df95f409581f8a9fd99a3fa | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d1a103dc9016c25e7423ce5841a5cc2df76d59f3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/df947d85e164a50a29d43a96e814f69ab1d0f7ed | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.