CVE-2026-68454: KVM: s390: pci: Fix handling of AIF enable without AISB
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 virttophys(pageaddress(NULL)).
Event History
Frequently Asked Questions
What is the severity of CVE-2026-68454?
CVE-2026-68454 has a risk score of 34, indicating a medium to high severity level.
How do I fix CVE-2026-68454?
To fix CVE-2026-68454, update your Linux kernel to the patched version where this vulnerability has been addressed.
What systems are affected by CVE-2026-68454?
CVE-2026-68454 affects systems running the Linux kernel that utilize KVM virtualization for s390 architecture.
What are the implications of CVE-2026-68454?
The implications of CVE-2026-68454 include potential improper handling of IRQs leading to system instability in virtualized environments.
Is CVE-2026-68454 being actively exploited?
As of now, there are no reports indicating that CVE-2026-68454 is being actively exploited in the wild.