{"id":"CVE-2026-98653","revision":null,"records":[{"revision":"1dc8259d83ae4f21b66f0a18a5274124","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98653","aliases":[],"title":"KVM: s390: Fix _gaccess_shadow_fault()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Fix _gaccess_shadow_fault()\n\nIn some circumstances, it is possible that the page of nested guest\nmemory that is being shadowed is not present at all in the parent guest\ngmap. dat_entry_walk() will not find any leaf entry and return with\n-ENOENT, which will erroneously be propagated all the way to userspace.\n\nFix by manually calling gmap_link() on the memory of the nested guest\nthat is being shadowed if the mapping was not already present.","state":0,"publishedAt":"2026-10-18T15:20:24.848+00:00","modifiedAt":"2026-10-19T09:23:22.624+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/s390/gaccess.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e38c884df92119d96f652d51f82661dd2fc0b885\",\n                            \"lessThan\": \"94c43c7df46433ed4d1e18f13770b019ba977bd8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e38c884df92119d96f652d51f82661dd2fc0b885\",\n                            \"lessThan\": \"faff4c8ff3dbec6d71b89dd281a0d17c4478fa44\",\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/s390/gaccess.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/94c43c7df46433ed4d1e18f13770b019ba977bd8","https://git.kernel.org/stable/c/faff4c8ff3dbec6d71b89dd281a0d17c4478fa44"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98653","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98653","identifiers":["CVE-2026-98653"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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