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.

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Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

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References
Link Providers
https://git.kernel.org/stable/c/11b8ff5b930b351dd1f6f088dce0beb027ac92d0 cve-icon
https://git.kernel.org/stable/c/16d990a15491cf76cd6eef0846e1b4100e63261a cve-icon
https://git.kernel.org/stable/c/31a9d9f9942885aae356a1a57c79e82c5b5b0828 cve-icon
https://git.kernel.org/stable/c/a99a25db131ece5e6c0f7632da606de631efe4f2 cve-icon
https://git.kernel.org/stable/c/b22a2da8792a7bfe743c1a922e77fa499ddedbe8 cve-icon
https://git.kernel.org/stable/c/e7216651b94e92e5433fb2f54b77864642b4ea48 cve-icon
History

Wed, 24 Jun 2026 18:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125
CWE-787

Wed, 24 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
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.
Title KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-06-24T16:28:47.438Z

Reserved: 2026-06-09T07:44:35.375Z

Link: CVE-2026-52968

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-06-24T18:30:06Z