{"id":"CVE-2024-43819","revision":null,"records":[{"revision":"182b7773ef0d44c5b894efed021fe117","observedAt":"2026-10-30T13:45:33.454+00:00","statement":{"source":"cve-program","id":"CVE-2024-43819","aliases":[],"title":"kvm: s390: Reject memory region operations for ucontrol VMs","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nkvm: s390: Reject memory region operations for ucontrol VMs\n\nThis change rejects the KVM_SET_USER_MEMORY_REGION and\nKVM_SET_USER_MEMORY_REGION2 ioctls when called on a ucontrol VM.\nThis is necessary since ucontrol VMs have kvm->arch.gmap set to 0 and\nwould thus result in a null pointer dereference further in.\nMemory management needs to be performed in userspace and using the\nioctls KVM_S390_UCAS_MAP and KVM_S390_UCAS_UNMAP.\n\nAlso improve s390 specific documentation for KVM_SET_USER_MEMORY_REGION\nand KVM_SET_USER_MEMORY_REGION2.\n\n[frankja@linux.ibm.com: commit message spelling fix, subject prefix fix]","state":0,"publishedAt":"2024-08-17T09:21:40.994+00:00","modifiedAt":"2026-10-30T12:19:02.338+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                        \"Documentation/virt/kvm/api.rst\",\n                        \"arch/s390/kvm/kvm-s390.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"27e0393f15fc8bc855c6a888387ff5ffd2181089\",\n                            \"lessThan\": \"8a1bbff443a5a22c466d11cbefca9cb361306a9b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27e0393f15fc8bc855c6a888387ff5ffd2181089\",\n                            \"lessThan\": \"705a8b8cc5a44b206096abb1bfdc8bc43b3c75c7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27e0393f15fc8bc855c6a888387ff5ffd2181089\",\n                            \"lessThan\": \"49c9945c054df4c22008e2bf87ca74d3e2507aa6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27e0393f15fc8bc855c6a888387ff5ffd2181089\",\n                            \"lessThan\": \"7816e58967d0e6cadce05c8540b47ed027dc2499\",\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                        \"Documentation/virt/kvm/api.rst\",\n                        \"arch/s390/kvm/kvm-s390.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.4\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.4\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.191\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.10.3\",\n                            \"lessThanOrEqual\": \"6.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.11\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/8a1bbff443a5a22c466d11cbefca9cb361306a9b","https://git.kernel.org/stable/c/705a8b8cc5a44b206096abb1bfdc8bc43b3c75c7","https://git.kernel.org/stable/c/49c9945c054df4c22008e2bf87ca74d3e2507aa6","https://git.kernel.org/stable/c/7816e58967d0e6cadce05c8540b47ed027dc2499"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-43819","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-43819","identifiers":["CVE-2024-43819"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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