Bug 2515349 (CVE-2026-68454) - CVE-2026-68454 kernel: KVM: s390: pci: Fix handling of AIF enable without AISB
Summary: CVE-2026-68454 kernel: KVM: s390: pci: Fix handling of AIF enable without AISB
Keywords:
Status: NEW
Alias: CVE-2026-68454
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-13 14:30 UTC by OSIDB Bzimport
Modified: 2026-08-13 16:06 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-08-13 14:30:56 UTC 
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)).
Comment 1 gkamathe 2026-08-13 16:00:38 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081330-CVE-2026-68454-53ae@gregkh/T
Note You need to log in before you can comment on or make changes to this bug.