CVE-2021-3930

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It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition."}, {"lang": "es", "value": "Se ha encontrado un error \"off-by-one\" en la emulaci\u00f3n de dispositivos SCSI en QEMU. Pod\u00eda ocurrir mientras eran procesados comandos MODE SELECT en mode_sense_page() si el argumento \"page\" era establecido como MODE_PAGE_ALLS (0x3f). Un hu\u00e9sped malicioso podr\u00eda usar este fallo para bloquear QEMU, resultando en una condici\u00f3n de denegaci\u00f3n de servicio"}], "id": "CVE-2021-3930", "lastModified": "2026-06-17T04:06:00.523", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 2.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 4.0, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-02-18T18:15:09.683", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2020588"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202208-27"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20220225-0007/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2020588"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202208-27"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20220225-0007/"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-193"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-193"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Alexander Bulekov and Qiuhao Li for reporting this issue.", "affected_release": [{"advisory": "RHSA-2021:5065", "cpe": "cpe:/a:redhat:advanced_virtualization:8.4::el8", "package": "virt:av-8040020211126213321.522a0ee4", "product_name": "Advanced Virtualization for RHEL 8.4.0.EUS", "release_date": "2021-12-09T00:00:00Z"}, {"advisory": "RHSA-2021:5065", "cpe": "cpe:/a:redhat:advanced_virtualization:8.4::el8", "package": "virt-devel:av-8040020211126213321.522a0ee4", "product_name": "Advanced Virtualization for RHEL 8.4.0.EUS", "release_date": "2021-12-09T00:00:00Z"}, {"advisory": "RHSA-2022:0081", "cpe": "cpe:/a:redhat:advanced_virtualization:8.5::el8", "package": "virt:av-8050020211203164130.c5368500", "product_name": "Advanced Virtualization for RHEL 8.5.0.Z", "release_date": "2022-01-11T00:00:00Z"}, {"advisory": "RHSA-2022:0081", "cpe": "cpe:/a:redhat:advanced_virtualization:8.5::el8", "package": "virt-devel:av-8050020211203164130.c5368500", "product_name": "Advanced Virtualization for RHEL 8.5.0.Z", "release_date": "2022-01-11T00:00:00Z"}, {"advisory": "RHSA-2021:5238", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "virt-devel:rhel-8050020211203195115.c5368500", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-12-21T00:00:00Z"}, {"advisory": "RHSA-2021:5238", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "virt:rhel-8050020211203195115.c5368500", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-12-21T00:00:00Z"}], "bugzilla": {"description": "QEMU: off-by-one error in mode_sense_page() in hw/scsi/scsi-disk.c", "id": "2020588", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2020588"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L", "status": "verified"}, "cwe": "CWE-193", "details": ["An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.", "An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2021-3930", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "qemu-kvm-ma", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:advanced_virtualization:8::el8", "fix_state": "Will not fix", "package_name": "virt:8.2/qemu-kvm", "product_name": "Red Hat Enterprise Linux 8 Advanced Virtualization"}, {"cpe": "cpe:/a:redhat:advanced_virtualization:8::el8", "fix_state": "Affected", "package_name": "virt:av/qemu-kvm", "product_name": "Red Hat Enterprise Linux 8 Advanced Virtualization"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openstack:10", "fix_state": "Out of support scope", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat OpenStack Platform 10 (Newton)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Out of support scope", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}], "public_date": "2021-02-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3930\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3930"], "threat_severity": "Low"}

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