{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/x86/kvm/svm/nested.c", "arch/x86/kvm/svm/svm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "b7fefb393a926bdfe445c63b4091185ed7da2733", "status": "affected", "version": "d20c796ca3709801f8a7fa36e8770a3dd8ebd34e", "versionType": "git"}, {"lessThan": "165b08d2d1346dce5ed43db65e10f3194b9ae2fe", "status": "affected", "version": "d20c796ca3709801f8a7fa36e8770a3dd8ebd34e", "versionType": "git"}, {"lessThan": "11d347b7edf5093d69aca72317300798a32bfd6b", "status": "affected", "version": "d20c796ca3709801f8a7fa36e8770a3dd8ebd34e", "versionType": "git"}, {"lessThan": "a3f0981a5a0e0bd51ad74cc7d9eed32294b24002", "status": "affected", "version": "d20c796ca3709801f8a7fa36e8770a3dd8ebd34e", "versionType": "git"}, {"lessThan": "9efe23568806d1cd06f7d146f9b3037b8d585a9f", "status": "affected", "version": "d20c796ca3709801f8a7fa36e8770a3dd8ebd34e", "versionType": "git"}, {"lessThan": "b53ab5167a81537777ac780bbd93d32613aa3bda", "status": "affected", "version": "d20c796ca3709801f8a7fa36e8770a3dd8ebd34e", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/x86/kvm/svm/nested.c", "arch/x86/kvm/svm/svm.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.19"}, {"lessThan": "5.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.27", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A56F60AE-F19E-4C75-B923-ACD1989D1A3D", "versionEndExcluding": "6.18.27", "versionStartIncluding": "5.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CDB78D6D-22C3-4154-B0D0-94AF1CE5C2E3", "versionEndExcluding": "7.0.4", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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()."}], "id": "CVE-2026-46071", "lastModified": "2026-11-06T17:17:34.847", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-46071", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:07:20.631190Z", "version": "2.0.3"}}]}, "published": "2026-05-27T14:17:28.397", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/11d347b7edf5093d69aca72317300798a32bfd6b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/165b08d2d1346dce5ed43db65e10f3194b9ae2fe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9efe23568806d1cd06f7d146f9b3037b8d585a9f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a3f0981a5a0e0bd51ad74cc7d9eed32294b24002"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b53ab5167a81537777ac780bbd93d32613aa3bda"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b7fefb393a926bdfe445c63b4091185ed7da2733"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}