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CVE

CVE-2026-80684

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

CVE-2026-80684

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 airqivcreate() 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 kvmzpciset_airq(). Add a NULL check and free the

previously allocated AISB bit and zdev->aisb on failure.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/0a95abe964400771ad82b027d7b84a0d183cd0db, https://git.kernel.org/stable/c/8bf09b9b7d3232806df95f409581f8a9fd99a3fa, https://git.kernel.org/stable/c/96099486b63985801c9c6ef22505e9aa635b2d20, https://git.kernel.org/stable/c/d1a103dc9016c25e7423ce5841a5cc2df76d59f3, https://git.kernel.org/stable/c/df947d85e164a50a29d43a96e814f69ab1d0f7ed, https://git.kernel.org/stable/c/e137d082325bbcae780087b57501d38585e625d9, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80684.json, https://nvd.nist.gov/vuln/detail/CVE-2026-80684, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.3

CVSS Score
0
10

Basic Information

Base CVSS
9.3
EPSS Probability
0.00196%
EPSS Percentile
0.08465%
Introduced Version
3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc,6.0.0,6.2.0,6.7.0,6.13.0,6.19.0,0
Fix Available
8bf09b9b7d3232806df95f409581f8a9fd99a3fa,6.1.183,6.6.151,6.12.103,6.18.44,7.1.8,6.1.187-1,6.12.107-1~deb12u1,6.12.105-1,1:6.18.44-99.149.amzn2023,1:1.0-0.amzn2023,1:6.12.103-127.188.amzn2023

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