KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-52968
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 17:17:07 UTC
Updated2026-07-18 08:16:35 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic kvm_s390_pci_aif_enable(), kvm_s390_pci_aif_disable(), and aen_host_forward() index the GAIT by manually multiplying the index with sizeof(struct zpci_gaite). Since aift->gait is already a struct zpci_gaite pointer, this double-scales the offset, accessing element aisb*16 instead of aisb. This causes out-of-bounds accesses when aisb >= 32 (with ZPCI_NR_DEVICES=512) Fix by removing the erroneous sizeof multiplication.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS: 0.001800000 probability, percentile 0.077310000 (date 2026-07-13)

Problem Types: CWE-125

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 73f91b004321f2510fa79e66035dbbf1870fcf56 31a9d9f9942885aae356a1a57c79e82c5b5b0828 git Not specified
CNA Linux Linux affected 73f91b004321f2510fa79e66035dbbf1870fcf56 a99a25db131ece5e6c0f7632da606de631efe4f2 git Not specified
CNA Linux Linux affected 73f91b004321f2510fa79e66035dbbf1870fcf56 11b8ff5b930b351dd1f6f088dce0beb027ac92d0 git Not specified
CNA Linux Linux affected 73f91b004321f2510fa79e66035dbbf1870fcf56 b22a2da8792a7bfe743c1a922e77fa499ddedbe8 git Not specified
CNA Linux Linux affected 73f91b004321f2510fa79e66035dbbf1870fcf56 e7216651b94e92e5433fb2f54b77864642b4ea48 git Not specified
CNA Linux Linux affected 73f91b004321f2510fa79e66035dbbf1870fcf56 16d990a15491cf76cd6eef0846e1b4100e63261a git Not specified
CNA Linux Linux affected 6.0 Not specified
CNA Linux Linux unaffected 6.0 semver Not specified
CNA Linux Linux unaffected 6.1.175 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.141 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.91 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.33 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.10 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/16d990a15491cf76cd6eef0846e1b4100e63261a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/31a9d9f9942885aae356a1a57c79e82c5b5b0828 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/e7216651b94e92e5433fb2f54b77864642b4ea48 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b22a2da8792a7bfe743c1a922e77fa499ddedbe8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a99a25db131ece5e6c0f7632da606de631efe4f2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/11b8ff5b930b351dd1f6f088dce0beb027ac92d0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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