CVE-2026-80684 is a vulnerability in Linux Kernel
Published on August 28, 2026
KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
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.
Products Associated with CVE-2026-80684
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Affected Versions
Linux:- Version 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and below 96099486b63985801c9c6ef22505e9aa635b2d20 is affected.
- Version 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and below 0a95abe964400771ad82b027d7b84a0d183cd0db is affected.
- Version 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and below df947d85e164a50a29d43a96e814f69ab1d0f7ed is affected.
- Version 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and below e137d082325bbcae780087b57501d38585e625d9 is affected.
- Version 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and below d1a103dc9016c25e7423ce5841a5cc2df76d59f3 is affected.
- Version 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc and below 8bf09b9b7d3232806df95f409581f8a9fd99a3fa is affected.
- Version 6.0 is affected.
- Before 6.0 is unaffected.
- Version 6.1.183, <= 6.1.* is unaffected.
- Version 6.6.151, <= 6.6.* is unaffected.
- Version 6.12.103, <= 6.12.* is unaffected.
- Version 6.18.44, <= 6.18.* is unaffected.
- Version 7.1.8, <= 7.1.* is unaffected.
- Version 7.2, <= * is unaffected.