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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-52968

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 73f91b004321f2510fa79e66035dbbf1870fcf56 to < 31a9d9f9942885aae356a1a57c79e82c5b5b0828affected
  • 73f91b004321f2510fa79e66035dbbf1870fcf56 to < a99a25db131ece5e6c0f7632da606de631efe4f2affected
  • 73f91b004321f2510fa79e66035dbbf1870fcf56 to < 11b8ff5b930b351dd1f6f088dce0beb027ac92d0affected
  • 73f91b004321f2510fa79e66035dbbf1870fcf56 to < b22a2da8792a7bfe743c1a922e77fa499ddedbe8affected
  • 73f91b004321f2510fa79e66035dbbf1870fcf56 to < e7216651b94e92e5433fb2f54b77864642b4ea48affected
  • 73f91b004321f2510fa79e66035dbbf1870fcf56 to < 16d990a15491cf76cd6eef0846e1b4100e63261aaffected

Linux Linux

Default version status: affected

  • 6.0affected
  • 0 to < 6.0unaffected
  • 6.1.175 to ≤ 6.1.*unaffected
  • 6.6.141 to ≤ 6.6.*unaffected
  • 6.12.91 to ≤ 6.12.*unaffected
  • 6.18.33 to ≤ 6.18.*unaffected
  • 7.0.10 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References