{"id":"CVE-2026-46071","summary":"KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nSVM: Avoid clearing VMCB_LBR in vmcb12\n\nsvm_copy_lbrs() always marks VMCB_LBR dirty in the destination VMCB.\nHowever, nested_svm_vmexit() uses it to copy LBRs to vmcb12, and\nclearing clean bits in vmcb12 is not architecturally defined.\n\nMove vmcb_mark_dirty() to callers and drop it for vmcb12.\n\nThis also facilitates incoming refactoring that does not pass the entire\nVMCB to svm_copy_lbrs().","modified":"2026-06-26T11:56:30.666860856Z","published":"2026-05-27T12:57:57.316Z","related":["openSUSE-SU-2026:10954-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46071.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/9efe23568806d1cd06f7d146f9b3037b8d585a9f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a3f0981a5a0e0bd51ad74cc7d9eed32294b24002"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b53ab5167a81537777ac780bbd93d32613aa3bda"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46071.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46071"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d20c796ca3709801f8a7fa36e8770a3dd8ebd34e"},{"fixed":"a3f0981a5a0e0bd51ad74cc7d9eed32294b24002"},{"fixed":"9efe23568806d1cd06f7d146f9b3037b8d585a9f"},{"fixed":"b53ab5167a81537777ac780bbd93d32613aa3bda"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46071.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.0"},{"fixed":"6.18.27"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-46071.json"}}],"schema_version":"1.7.5"}