{"id":"CVE-2026-52968","revision":null,"records":[{"revision":"6177189dd6fe49d6b50dd65251d403cb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-52968","aliases":[],"title":"KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic\n\nkvm_s390_pci_aif_enable(), kvm_s390_pci_aif_disable(), and\naen_host_forward() index the GAIT by manually multiplying the index\nwith sizeof(struct zpci_gaite).\n\nSince aift->gait is already a struct zpci_gaite pointer, this\ndouble-scales the offset, accessing element aisb*16 instead of aisb.\n\nThis causes out-of-bounds accesses when aisb >= 32 (with\nZPCI_NR_DEVICES=512)\n\nFix by removing the erroneous sizeof multiplication.","state":0,"publishedAt":"2026-06-24T16:28:47.438+00:00","modifiedAt":"2026-10-19T19:47:10.859+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"arch/s390/kvm/interrupt.c\",\n \"arch/s390/kvm/pci.c\"\n ],\n \"versions\": [\n {\n \"version\": \"73f91b004321f2510fa79e66035dbbf1870fcf56\",\n \"lessThan\": \"31a9d9f9942885aae356a1a57c79e82c5b5b0828\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"73f91b004321f2510fa79e66035dbbf1870fcf56\",\n \"lessThan\": \"a99a25db131ece5e6c0f7632da606de631efe4f2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"73f91b004321f2510fa79e66035dbbf1870fcf56\",\n \"lessThan\": \"11b8ff5b930b351dd1f6f088dce0beb027ac92d0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"73f91b004321f2510fa79e66035dbbf1870fcf56\",\n \"lessThan\": \"b22a2da8792a7bfe743c1a922e77fa499ddedbe8\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"73f91b004321f2510fa79e66035dbbf1870fcf56\",\n \"lessThan\": \"e7216651b94e92e5433fb2f54b77864642b4ea48\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"73f91b004321f2510fa79e66035dbbf1870fcf56\",\n \"lessThan\": \"16d990a15491cf76cd6eef0846e1b4100e63261a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"arch/s390/kvm/interrupt.c\",\n \"arch/s390/kvm/pci.c\"\n ],\n \"versions\": [\n {\n \"version\": \"6.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"6.0\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.175\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.141\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.91\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.33\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0.10\",\n \"lessThanOrEqual\": \"7.0.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/31a9d9f9942885aae356a1a57c79e82c5b5b0828","https://git.kernel.org/stable/c/a99a25db131ece5e6c0f7632da606de631efe4f2","https://git.kernel.org/stable/c/11b8ff5b930b351dd1f6f088dce0beb027ac92d0","https://git.kernel.org/stable/c/b22a2da8792a7bfe743c1a922e77fa499ddedbe8","https://git.kernel.org/stable/c/e7216651b94e92e5433fb2f54b77864642b4ea48","https://git.kernel.org/stable/c/16d990a15491cf76cd6eef0846e1b4100e63261a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-52968","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-52968","identifiers":["CVE-2026-52968"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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