CVE-2023-42467

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*", "matchCriteriaId": "5172ED53-5D28-4A36-8A5E-61EF17F0ED53", "versionEndIncluding": "8.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because scsi_disk_emulate_mode_select does not prevent s->qdev.blocksize from being 256. This stops QEMU and the guest immediately."}, {"lang": "es", "value": "QEMU hasta 8.0.0 podr\u00eda desencadenar una divisi\u00f3n por cero en scsi_disk_reset en hw/scsi/scsi-disk.c porque scsi_disk_emulate_mode_select no impide que s->qdev.blocksize sea 256. Esto detiene QEMU y el invitado inmediatamente."}], "id": "CVE-2023-42467", "lastModified": "2026-06-17T06:23:53.760", "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-2023-42467", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-26T17:36:22.156086Z", "version": "2.0.3"}}]}, "published": "2023-09-11T04:15:10.720", "references": [{"source": "cve@mitre.org", "url": "https://gitlab.com/qemu-project/qemu/-/commit/7cfcc79b0ab800959716738aff9419f53fc68c9c"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://gitlab.com/qemu-project/qemu/-/issues/1813"}, {"source": "cve@mitre.org", "url": "https://security.netapp.com/advisory/ntap-20231103-0005/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://gitlab.com/qemu-project/qemu/-/commit/7cfcc79b0ab800959716738aff9419f53fc68c9c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://gitlab.com/qemu-project/qemu/-/issues/1813"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.netapp.com/advisory/ntap-20231103-0005/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-369"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:2135", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "qemu-kvm-17:8.2.0-11.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-04-30T00:00:00Z"}], "bugzilla": {"description": "QEMU: am53c974: denial of service due to division by zero", "id": "2238291", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2238291"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L", "status": "verified"}, "cwe": "CWE-369", "details": ["QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because scsi_disk_emulate_mode_select does not prevent s->qdev.blocksize from being 256. This stops QEMU and the guest immediately.", "A denial of service vulnerability was found in the qemu package. A division by zero in the scsi_disk_reset function can cause QEMU and the guest to stop immediately."], "name": "CVE-2023-42467", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "qemu-kvm-ma", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "virt:rhel/qemu-kvm", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:advanced_virtualization:8::el8", "fix_state": "Fix deferred", "package_name": "virt:av/qemu-kvm", "product_name": "Red Hat Enterprise Linux 8 Advanced Virtualization"}], "public_date": "2023-09-11T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-42467\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-42467\nhttps://gitlab.com/qemu-project/qemu/-/issues/1813"], "statement": "Triggering this bug requires kernel or root privileges in the guest VM because it requires direct hardware access. Anyone who has these privileges could also just perform a regular shutdown of the VM, with only a very slightly different result.", "threat_severity": "Low"}

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