{"id":"CVE-2024-43819","state":"PUBLISHED","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]","publishedAt":"2024-08-17T09:21:40.994Z","updatedAt":"2026-10-30T12:19:02.338Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"27e0393f15fc8bc855c6a888387ff5ffd2181089","status":"affected","lessThan":"8a1bbff443a5a22c466d11cbefca9cb361306a9b","versionType":"git"},{"version":"27e0393f15fc8bc855c6a888387ff5ffd2181089","status":"affected","lessThan":"705a8b8cc5a44b206096abb1bfdc8bc43b3c75c7","versionType":"git"},{"version":"27e0393f15fc8bc855c6a888387ff5ffd2181089","status":"affected","lessThan":"49c9945c054df4c22008e2bf87ca74d3e2507aa6","versionType":"git"},{"version":"27e0393f15fc8bc855c6a888387ff5ffd2181089","status":"affected","lessThan":"7816e58967d0e6cadce05c8540b47ed027dc2499","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["Documentation/virt/kvm/api.rst","arch/s390/kvm/kvm-s390.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.4","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.10.3","status":"unaffected","lessThanOrEqual":"6.10.*","versionType":"semver"},{"version":"6.11","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["Documentation/virt/kvm/api.rst","arch/s390/kvm/kvm-s390.c"]}],"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"],"weaknesses":[],"ingestedAt":"2026-10-30T12:36:04.432Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/43xxx/CVE-2024-43819.json","commit":"db8103c5921aac81d5d90efcf3745980dafabf49","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-43819","state":"PUBLISHED","datePublished":"2024-08-17T09:21:40.994Z","dateUpdated":"2026-10-30T12:19:02.338Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-08-17T09:11:59.271Z"},"containers":{"cna":{"title":"kvm: s390: Reject memory region operations for ucontrol VMs","descriptions":[{"lang":"en","value":"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]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"27e0393f15fc8bc855c6a888387ff5ffd2181089","status":"affected","lessThan":"8a1bbff443a5a22c466d11cbefca9cb361306a9b","versionType":"git"},{"version":"27e0393f15fc8bc855c6a888387ff5ffd2181089","status":"affected","lessThan":"705a8b8cc5a44b206096abb1bfdc8bc43b3c75c7","versionType":"git"},{"version":"27e0393f15fc8bc855c6a888387ff5ffd2181089","status":"affected","lessThan":"49c9945c054df4c22008e2bf87ca74d3e2507aa6","versionType":"git"},{"version":"27e0393f15fc8bc855c6a888387ff5ffd2181089","status":"affected","lessThan":"7816e58967d0e6cadce05c8540b47ed027dc2499","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["Documentation/virt/kvm/api.rst","arch/s390/kvm/kvm-s390.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.4","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.10.3","status":"unaffected","lessThanOrEqual":"6.10.*","versionType":"semver"},{"version":"6.11","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["Documentation/virt/kvm/api.rst","arch/s390/kvm/kvm-s390.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8a1bbff443a5a22c466d11cbefca9cb361306a9b"},{"url":"https://git.kernel.org/stable/c/705a8b8cc5a44b206096abb1bfdc8bc43b3c75c7"},{"url":"https://git.kernel.org/stable/c/49c9945c054df4c22008e2bf87ca74d3e2507aa6"},{"url":"https://git.kernel.org/stable/c/7816e58967d0e6cadce05c8540b47ed027dc2499"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:19:02.338Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.10.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4","versionEndExcluding":"6.11"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-43819","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T16:09:06.730085Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-12T17:33:25.193Z"}}]}}}