CVE-2026-52968

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.0 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://git.kernel.org/stable/c/11b8ff5b930b351dd1f6f088dce0beb027ac92d0	Patch
https://git.kernel.org/stable/c/16d990a15491cf76cd6eef0846e1b4100e63261a	Patch
https://git.kernel.org/stable/c/31a9d9f9942885aae356a1a57c79e82c5b5b0828	Patch
https://git.kernel.org/stable/c/a99a25db131ece5e6c0f7632da606de631efe4f2	Patch
https://git.kernel.org/stable/c/b22a2da8792a7bfe743c1a922e77fa499ddedbe8	Patch
https://git.kernel.org/stable/c/e7216651b94e92e5433fb2f54b77864642b4ea48	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::

History

No history.

Information

Published : 2026-06-24 17:17

Updated : 2026-07-18 08:16

NVD link : CVE-2026-52968

Mitre link : CVE-2026-52968

CVE.ORG link : CVE-2026-52968

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-125

Out-of-bounds Read

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