CVE-2026-52968
KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic
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.
INFO
Published Date :
June 24, 2026, 4:28 p.m.
Last Modified :
June 24, 2026, 4:28 p.m.
Remotely Exploit :
No
Source :
Linux
Affected Products
The following products are affected by CVE-2026-52968
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Remove erroneous sizeof multiplication in GAIT indexing.
- Update the Linux kernel to the latest version.
- Apply the specific patch for KVM s390 PCI.
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