CVE-2026-52968

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2026-52968

Import Source

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-52968

Downstream

Published

2026-06-24T16:28:47.438Z

Modified

2026-07-08T08:13:43.805608736Z

Summary

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

Details

In the Linux kernel, the following vulnerability has been resolved:

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

kvms390pciaifenable(), kvms390pciaifdisable(), and aenhostforward() 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 ZPCINRDEVICES=512)

Fix by removing the erroneous sizeof multiplication.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52968.json",
    "cna_assigner": "Linux"
}

References

Affected packages

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

73f91b004321f2510fa79e66035dbbf1870fcf56

Fixed

31a9d9f9942885aae356a1a57c79e82c5b5b0828

Fixed

a99a25db131ece5e6c0f7632da606de631efe4f2

Fixed

11b8ff5b930b351dd1f6f088dce0beb027ac92d0

Fixed

b22a2da8792a7bfe743c1a922e77fa499ddedbe8

Fixed

e7216651b94e92e5433fb2f54b77864642b4ea48

Fixed

16d990a15491cf76cd6eef0846e1b4100e63261a

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52968.json"

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52968.json"