Description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix handling of AIF enable without AISB When a guest seeks to register IRQs without a summary bit specified, ensure that the associated GAITE then stores 0 for the guest AISB location instead of virt_to_phys(page_address(NULL)).
References6
- git.kernel.org/stable/c/124a3769c43713a11a93a821b313e61ad5110cb8
- git.kernel.org/stable/c/3e3aa6da87d30a0064a17b836685cd43c90a3572
- git.kernel.org/stable/c/3ef3190e30601b2688bdc64169b938b8d7f42010
- git.kernel.org/stable/c/d48b9b096d11e31690c0a4988f65f21b64c01b2a
- git.kernel.org/stable/c/df72596278b0e22dac5ef2881e9221a3a2c4ed11
- git.kernel.org/stable/c/f887df91826e72b570c5e9298e66dd929f09edde
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 12 November 2026
- CWE
- CWE-20
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.