{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46032", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.093Z", "datePublished": "2026-05-27T12:56:41.159Z", "dateUpdated": "2026-06-14T17:49:20.299Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-14T17:49:20.299Z"}, "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."}], "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", "arch/x86/kvm/svm/svm.c", "arch/x86/kvm/svm/svm.h"], "versions": [{"version": "d82aaef9c88aa27bce63751d6d6329920b1fe8da", "lessThan": "9a738cf170a4a2332ea3a15e23ec65b5757fe4a1", "status": "affected", "versionType": "git"}, {"version": "d82aaef9c88aa27bce63751d6d6329920b1fe8da", "lessThan": "5d291ef0585ed880ed4dd71ea1a5965e0a65fb53", "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", "arch/x86/kvm/svm/svm.c", "arch/x86/kvm/svm/svm.h"], "versions": [{"version": "5.9", "status": "affected"}, {"version": "0", "lessThan": "5.9", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "5.9", "versionEndExcluding": "7.0.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9a738cf170a4a2332ea3a15e23ec65b5757fe4a1"}, {"url": "https://git.kernel.org/stable/c/5d291ef0585ed880ed4dd71ea1a5965e0a65fb53"}], "title": "KVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/x86/kvm/svm/nested.c", "arch/x86/kvm/svm/svm.c", "arch/x86/kvm/svm/svm.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "9a738cf170a4a2332ea3a15e23ec65b5757fe4a1", "status": "affected", "version": "d82aaef9c88aa27bce63751d6d6329920b1fe8da", "versionType": "git"}, {"lessThan": "5d291ef0585ed880ed4dd71ea1a5965e0a65fb53", "status": "affected", "version": "d82aaef9c88aa27bce63751d6d6329920b1fe8da", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/x86/kvm/svm/nested.c", "arch/x86/kvm/svm/svm.c", "arch/x86/kvm/svm/svm.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.9"}, {"lessThan": "5.9", "status": "unaffected", "version": "0", "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": "3281FFDB-1FD5-445E-866B-C9099873426A", "versionEndExcluding": "7.0.4", "versionStartIncluding": "5.9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}], "id": "CVE-2026-46032", "lastModified": "2026-06-17T10:52:56.070", "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"}]}, "published": "2026-05-27T14:17:22.190", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5d291ef0585ed880ed4dd71ea1a5965e0a65fb53"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9a738cf170a4a2332ea3a15e23ec65b5757fe4a1"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: KVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT", "id": "2482033", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482033"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-248", "details": ["A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) nSVM module. When a nested virtual machine exit (#VMEXIT) occurs, if the restoration of the host's Control Register 3 (CR3) fails, the system continues to operate with a corrupted state. This can lead to an unrecoverable error, resulting in a system shutdown. This vulnerability can cause a Denial of Service (DoS) for the affected system."], "name": "CVE-2026-46032", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46032\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46032\nhttps://lore.kernel.org/linux-cve-announce/2026052749-CVE-2026-46032-9c0d@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d82aaef9c88aa27bce63751d6d6329920b1fe8da,9a738cf170a4a2332ea3a15e23ec65b5757fe4a1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d82aaef9c88aa27bce63751d6d6329920b1fe8da,5d291ef0585ed880ed4dd71ea1a5965e0a65fb53)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "5.9"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.9)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.4,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-27T20:30:40.561552+00:00", "updated": "2026-06-18T02:15:15.643724+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}