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Vulnerabilities CVE-2026-52968

CVE-2026-52968

High
Open
TLP:CLEAR

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

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Description

In 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.

Details

CVSS Score
8.8
EPSS Score
0.14%

3.7th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Confidence
90%
Published
Jun 24, 2026
Last Modified
Jul 18, 2026
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