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CVE-2026-68454

KVM: s390: pci: Fix handling of AIF enable without AISB

HIGH
8.8
CVSS Score
Published: August 13, 2026 at 01:59 PM UTC
Updated: October 19, 2026 at 10:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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)).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc6.0
Vendor states this is fixed in 124a3769c43713a11a93a821b313e61ad5110cb8 (fixed)
Vendor states this is fixed in 3e3aa6da87d30a0064a17b836685cd43c90a3572 (fixed)
Vendor states this is fixed in 3ef3190e30601b2688bdc64169b938b8d7f42010 (fixed)
Vendor states this is fixed in d48b9b096d11e31690c0a4988f65f21b64c01b2a (fixed)
Vendor states this is fixed in df72596278b0e22dac5ef2881e9221a3a2c4ed11 (fixed)
Vendor states this is fixed in f887df91826e72b570c5e9298e66dd929f09edde (fixed)
Vendor states this is fixed in 6.0 (unaffected)
Vendor states this is fixed in 6.1.178 (unaffected)
Vendor states this is fixed in 6.12.97 (unaffected)
Vendor states this is fixed in 6.18.40 (unaffected)
Vendor states this is fixed in 6.6.145 (unaffected)
Vendor states this is fixed in 7.1.5 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (6)

Source: cverecord
https://git.kernel.org/stable/c/f887df91826e72b570c5e9298e66dd929f09edde
Source: cverecord
https://git.kernel.org/stable/c/3ef3190e30601b2688bdc64169b938b8d7f42010
Source: cverecord
https://git.kernel.org/stable/c/d48b9b096d11e31690c0a4988f65f21b64c01b2a
Source: cverecord
https://git.kernel.org/stable/c/df72596278b0e22dac5ef2881e9221a3a2c4ed11
Source: cverecord
https://git.kernel.org/stable/c/124a3769c43713a11a93a821b313e61ad5110cb8
Source: cverecord
https://git.kernel.org/stable/c/3e3aa6da87d30a0064a17b836685cd43c90a3572

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED
CWE
CWE-20

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