{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-58147", "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "state": "PUBLISHED", "assignerShortName": "XEN", "dateReserved": "2025-08-26T06:48:41.443Z", "datePublished": "2025-10-31T11:50:28.282Z", "dateUpdated": "2025-10-31T17:45:58.124Z"}, "containers": {"cna": {"title": "x86: Incorrect input sanitisation in Viridian hypercalls", "datePublic": "2025-10-21T11:59:00.000Z", "descriptions": [{"lang": "en", "value": "[This CNA information record relates to multiple CVEs; the\ntext explains which aspects/vulnerabilities correspond to which CVE.]\n\nSome Viridian hypercalls can specify a mask of vCPU IDs as an input, in\none of three formats. Xen has boundary checking bugs with all three\nformats, which can cause out-of-bounds reads and writes while processing\nthe inputs.\n\n * CVE-2025-58147. Hypercalls using the HV_VP_SET Sparse format can\n cause vpmask_set() to write out of bounds when converting the bitmap\n to Xen's format.\n\n * CVE-2025-58148. Hypercalls using any input format can cause\n send_ipi() to read d->vcpu[] out-of-bounds, and operate on a wild\n vCPU pointer."}], "impacts": [{"descriptions": [{"lang": "en", "value": "A buggy or malicious guest can cause Denial of Service (DoS) affecting\nthe entire host, information leaks, or elevation of privilege."}]}], "affected": [{"defaultStatus": "unknown", "product": "Xen", "vendor": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-475"}]}], "configurations": [{"lang": "en", "value": "Xen versions 4.15 and newer are vulnerable. Versions 4.14 and older are\nnot vulnerable.\n\nOnly x86 HVM guests which have Viridian enabled can leverage the\nvulnerability.\n\nWith the `xl` toolstack, this means any `viridian=` setting in the VM's\nconfiguration file.\n\nNote - despite:\n\n `viridian=[\"!hcall_remote_tlb_flush\", \"!hcall_ipi\", \"!ex_processor_masks\"]`\n\nbeing documented to turns off the relevant functionality, this\nconfiguration does not block the relevant hypercalls."}], "workarounds": [{"lang": "en", "value": "Not enabling Viridian will avoid the issuse."}], "credits": [{"lang": "en", "type": "finder", "value": "This issue was discovered by Teddy Astie of Vates"}], "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-475.html"}], "providerMetadata": {"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN", "dateUpdated": "2025-10-31T11:50:28.282Z"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-125", "lang": "en", "description": "CWE-125 Out-of-bounds Read"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2025-10-31T17:45:24.503747Z", "id": "CVE-2025-58147", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-31T17:45:58.124Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2025-58147", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-10-31T17:45:24.503747Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-31T17:45:51.934Z"}}], "cna": {"title": "x86: Incorrect input sanitisation in Viridian hypercalls", "credits": [{"lang": "en", "type": "finder", "value": "This issue was discovered by Teddy Astie of Vates"}], "impacts": [{"descriptions": [{"lang": "en", "value": "A buggy or malicious guest can cause Denial of Service (DoS) affecting\nthe entire host, information leaks, or elevation of privilege."}]}], "affected": [{"vendor": "Xen", "product": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-475"}], "defaultStatus": "unknown"}], "datePublic": "2025-10-21T11:59:00.000Z", "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-475.html"}], "workarounds": [{"lang": "en", "value": "Not enabling Viridian will avoid the issuse."}], "descriptions": [{"lang": "en", "value": "[This CNA information record relates to multiple CVEs; the\ntext explains which aspects/vulnerabilities correspond to which CVE.]\n\nSome Viridian hypercalls can specify a mask of vCPU IDs as an input, in\none of three formats. Xen has boundary checking bugs with all three\nformats, which can cause out-of-bounds reads and writes while processing\nthe inputs.\n\n * CVE-2025-58147. Hypercalls using the HV_VP_SET Sparse format can\n cause vpmask_set() to write out of bounds when converting the bitmap\n to Xen's format.\n\n * CVE-2025-58148. Hypercalls using any input format can cause\n send_ipi() to read d->vcpu[] out-of-bounds, and operate on a wild\n vCPU pointer."}], "configurations": [{"lang": "en", "value": "Xen versions 4.15 and newer are vulnerable. Versions 4.14 and older are\nnot vulnerable.\n\nOnly x86 HVM guests which have Viridian enabled can leverage the\nvulnerability.\n\nWith the `xl` toolstack, this means any `viridian=` setting in the VM's\nconfiguration file.\n\nNote - despite:\n\n `viridian=[\"!hcall_remote_tlb_flush\", \"!hcall_ipi\", \"!ex_processor_masks\"]`\n\nbeing documented to turns off the relevant functionality, this\nconfiguration does not block the relevant hypercalls."}], "providerMetadata": {"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN", "dateUpdated": "2025-10-31T11:50:28.282Z"}}}, "cveMetadata": {"cveId": "CVE-2025-58147", "state": "PUBLISHED", "dateUpdated": "2025-10-31T17:45:58.124Z", "dateReserved": "2025-08-26T06:48:41.443Z", "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "datePublished": "2025-10-31T11:50:28.282Z", "assignerShortName": "XEN"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "[This CNA information record relates to multiple CVEs; the\ntext explains which aspects/vulnerabilities correspond to which CVE.]\n\nSome Viridian hypercalls can specify a mask of vCPU IDs as an input, in\none of three formats. Xen has boundary checking bugs with all three\nformats, which can cause out-of-bounds reads and writes while processing\nthe inputs.\n\n * CVE-2025-58147. Hypercalls using the HV_VP_SET Sparse format can\n cause vpmask_set() to write out of bounds when converting the bitmap\n to Xen's format.\n\n * CVE-2025-58148. Hypercalls using any input format can cause\n send_ipi() to read d->vcpu[] out-of-bounds, and operate on a wild\n vCPU pointer."}], "id": "CVE-2025-58147", "lastModified": "2025-10-31T18:15:32.577", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-10-31T12:15:34.590", "references": [{"source": "security@xen.org", "url": "https://xenbits.xenproject.org/xsa/advisory-475.html"}], "sourceIdentifier": "security@xen.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

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