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CVE-2026-80684

CRITICALCVSS 9.3/10EPSS 0.17%

Last modified

CVE-2026-80684 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. 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(). EPSS estimates a 0.17% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.3/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Probability
0.17%

6.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < 96099486b63985801c9c6ef22505e9aa635b2d20; >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < 0a95abe964400771ad82b027d7b84a0d183cd0db; >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < df947d85e164a50a29d43a96e814f69ab1d0f7ed; >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < e137d082325bbcae780087b57501d38585e625d9; >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < d1a103dc9016c25e7423ce5841a5cc2df76d59f3; >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc, < 8bf09b9b7d3232806df95f409581f8a9fd99a3fa
LinuxLinux6.0

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-80684?
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.
How severe is CVE-2026-80684?
CVE-2026-80684 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-80684?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST