{"containers": {"cna": {"affected": [{"product": "QEMU", "vendor": "n/a", "versions": [{"status": "affected", "version": "Affects v6.0.0 and above."}]}], "descriptions": [{"lang": "en", "value": "A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-476", "description": "CWE-476 - NULL Pointer Dereference", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-08-24T15:10:39", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://gitlab.com/qemu-project/qemu/-/issues/770"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2035002"}, {"tags": ["x_refsource_MISC"], "url": "https://access.redhat.com/security/cve/CVE-2021-4158"}, {"tags": ["x_refsource_MISC"], "url": "https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html"}, {"tags": ["x_refsource_MISC"], "url": "https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827e"}]}}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2021-4158", "datePublished": "2022-08-24T15:10:39", "dateReserved": "2021-12-23T00:00:00", "dateUpdated": "2022-08-24T15:10:39", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*", "matchCriteriaId": "9256E28E-727B-4C6F-96E3-F2D4EA5E4BB1", "versionEndExcluding": "7.0.0", "versionStartIncluding": "6.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition."}, {"lang": "es", "value": "Se ha encontrado un problema de desreferencia de puntero NULL en el c\u00f3digo ACPI de QEMU. Un usuario malicioso y con privilegios dentro del hu\u00e9sped pod\u00eda usar este fallo para bloquear el proceso de QEMU en el host, resultando en una situaci\u00f3n de denegaci\u00f3n de servicio."}], "id": "CVE-2021-4158", "lastModified": "2024-01-25T21:29:39.943", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.5, "impactScore": 4.0, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-08-24T16:15:09.660", "references": [{"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2021-4158"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2035002"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827e"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://gitlab.com/qemu-project/qemu/-/issues/770"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "secalert@redhat.com", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Secondary"}]}

{}