{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-50115","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-10-21T19:36:19.947Z","datePublished":"2024-11-05T17:10:46.677Z","dateUpdated":"2025-11-03T22:25:38.622Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T09:46:21.969Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory\n\nIgnore nCR3[4:0] when loading PDPTEs from memory for nested SVM, as bits\n4:0 of CR3 are ignored when PAE paging is used, and thus VMRUN doesn't\nenforce 32-byte alignment of nCR3.\n\nIn the absolute worst case scenario, failure to ignore bits 4:0 can result\nin an out-of-bounds read, e.g. if the target page is at the end of a\nmemslot, and the VMM isn't using guard pages.\n\nPer the APM:\n\n  The CR3 register points to the base address of the page-directory-pointer\n  table. The page-directory-pointer table is aligned on a 32-byte boundary,\n  with the low 5 address bits 4:0 assumed to be 0.\n\nAnd the SDM's much more explicit:\n\n  4:0    Ignored\n\nNote, KVM gets this right when loading PDPTRs, it's only the nSVM flow\nthat is broken."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kvm/svm/nested.c"],"versions":[{"version":"e4e517b4be019787ada4cbbce2f04570c21b0cbd","lessThan":"76ce386feb14ec9a460784fcd495d8432acce7a5","status":"affected","versionType":"git"},{"version":"e4e517b4be019787ada4cbbce2f04570c21b0cbd","lessThan":"58cb697d80e669c56197f703e188867c8c54c494","status":"affected","versionType":"git"},{"version":"e4e517b4be019787ada4cbbce2f04570c21b0cbd","lessThan":"6876793907cbe19d42e9edc8c3315a21e06c32ae","status":"affected","versionType":"git"},{"version":"e4e517b4be019787ada4cbbce2f04570c21b0cbd","lessThan":"2c4adc9b192a0815fe58a62bc0709449416cc884","status":"affected","versionType":"git"},{"version":"e4e517b4be019787ada4cbbce2f04570c21b0cbd","lessThan":"426682afec71ea3f889b972d038238807b9443e4","status":"affected","versionType":"git"},{"version":"e4e517b4be019787ada4cbbce2f04570c21b0cbd","lessThan":"f559b2e9c5c5308850544ab59396b7d53cfc67bd","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/kvm/svm/nested.c"],"versions":[{"version":"3.2","status":"affected"},{"version":"0","lessThan":"3.2","status":"unaffected","versionType":"semver"},{"version":"5.10.229","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.170","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.115","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.59","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.11.6","lessThanOrEqual":"6.11.*","status":"unaffected","versionType":"semver"},{"version":"6.12","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.10.229"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.15.170"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.1.115"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.6.59"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.11.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.12"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/76ce386feb14ec9a460784fcd495d8432acce7a5"},{"url":"https://git.kernel.org/stable/c/58cb697d80e669c56197f703e188867c8c54c494"},{"url":"https://git.kernel.org/stable/c/6876793907cbe19d42e9edc8c3315a21e06c32ae"},{"url":"https://git.kernel.org/stable/c/2c4adc9b192a0815fe58a62bc0709449416cc884"},{"url":"https://git.kernel.org/stable/c/426682afec71ea3f889b972d038238807b9443e4"},{"url":"https://git.kernel.org/stable/c/f559b2e9c5c5308850544ab59396b7d53cfc67bd"}],"title":"KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.1,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"id":"CVE-2024-50115","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T20:21:56.032296Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","cweId":"CWE-125","description":"CWE-125 Out-of-bounds Read"}]}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T20:27:17.080Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T22:25:38.622Z"}}]}}