CVE-2026-68454

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the KVM s390 PCI implementation regarding the handling of AIF (Advanced Interrupt Facility) enable without AISB (Advanced Interrupt Summary Bit). When a guest attempts to register IRQs without a specified summary bit, the associated GAITE (Guest Address Interrupt Table Entry) incorrectly stores virt to phys(page address(NULL)) instead of 0 for the guest AISB location.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.