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.
Affected versions
Linux kernel versions
6.0
and later are affected. Fixed in
6.1.175,
6.6.141,
6.12.91,
6.18.33,
7.0.10,
7.1
and their respective stable series.
References
6 totalFrequently asked questions
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What is CVE-2026-52968?
CVE-2026-52968 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.0 onward and has been patched in 6.1.175, 6.6.141, 6.12.91 and others. CVE-2026-52968 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-52968?
Yes — CVE-2026-52968 has been patched. Fixed versions include 6.1.175, 6.6.141, 6.12.91 and others. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-52968 actively exploited?
No — CVE-2026-52968 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.