Critical severity · published Aug 28, 2026
CVE-2026-80684
KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
9.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before 96099486b63985801c9c6ef22505e9aa635b2d20; 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before 0a95abe964400771ad82b027d7b84a0d183cd0db; 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before df947d85e164a50a29d43a96e814f69ab1d0f7ed; 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before e137d082325bbcae780087b57501d38585e625d9; 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before d1a103dc9016c25e7423ce5841a5cc2df76d59f3; 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before 8bf09b9b7d3232806df95f409581f8a9fd99a3fa; +1 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80684
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-80684
git.kernel.org
https://git.kernel.org/stable/c/0a95abe964400771ad82b027d7b84a0d183cd0db
git.kernel.org
https://git.kernel.org/stable/c/8bf09b9b7d3232806df95f409581f8a9fd99a3fa
git.kernel.org
https://git.kernel.org/stable/c/96099486b63985801c9c6ef22505e9aa635b2d20
git.kernel.org
https://git.kernel.org/stable/c/d1a103dc9016c25e7423ce5841a5cc2df76d59f3
git.kernel.org
https://git.kernel.org/stable/c/df947d85e164a50a29d43a96e814f69ab1d0f7ed
git.kernel.org
https://git.kernel.org/stable/c/e137d082325bbcae780087b57501d38585e625d9
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