CVE-2026-46032

{"id": "CVE-2026-46032", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "d82aaef9c88aa27bce63751d6d6329920b1fe8da", "lessThan": "9a738cf170a4a2332ea3a15e23ec65b5757fe4a1", "versionType": "git"}, {"status": "affected", "version": "d82aaef9c88aa27bce63751d6d6329920b1fe8da", "lessThan": "5d291ef0585ed880ed4dd71ea1a5965e0a65fb53", "versionType": "git"}], "programFiles": ["arch/x86/kvm/svm/nested.c", "arch/x86/kvm/svm/svm.c", "arch/x86/kvm/svm/svm.h"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.9"}, {"status": "unaffected", "version": "0", "lessThan": "5.9", "versionType": "semver"}, {"status": "unaffected", "version": "7.0.4", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["arch/x86/kvm/svm/nested.c", "arch/x86/kvm/svm/svm.c", "arch/x86/kvm/svm/svm.h"], "defaultStatus": "affected"}]}], "published": "2026-05-27T14:17:22.190", "references": [{"url": "https://git.kernel.org/stable/c/5d291ef0585ed880ed4dd71ea1a5965e0a65fb53", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9a738cf170a4a2332ea3a15e23ec65b5757fe4a1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT\n\nIf loading L1's CR3 fails on a nested #VMEXIT, nested_svm_vmexit()\nreturns an error code that is ignored by most callers, and continues to\nrun L1 with corrupted state. A sane recovery is not possible in this\ncase, and HW behavior is to cause a shutdown. Inject a triple fault\ninstead, and do not return early from nested_svm_vmexit(). Continue\ncleaning up the vCPU state (e.g. clear pending exceptions), to handle\nthe failure as gracefully as possible.\n\nFrom the APM:\n\n Upon #VMEXIT, the processor performs the following actions in order to\n return to the host execution context:\n\n ...\n\n if (illegal host state loaded, or exception while loading host state)\n shutdown\n else\n execute first host instruction following the VMRUN\n\nRemove the return value of nested_svm_vmexit(), which is mostly\nunchecked anyway."}], "lastModified": "2026-06-17T10:52:56.070", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3281FFDB-1FD5-445E-866B-C9099873426A", "versionEndExcluding": "7.0.4", "versionStartIncluding": "5.9"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}