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"vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The dispatch_discard_io function in drivers/block/xen-blkback/blkback.c in the Xen blkback implementation in the Linux kernel before 3.10.5 allows guest OS users to cause a denial of service (data loss) via filesystem write operations on a read-only disk that supports the (1) BLKIF_OP_DISCARD (aka discard or TRIM) or (2) SCSI UNMAP feature."}, {"lang": "es", "value": "La funci\u00f3n dispatch_discard_io en drivers/block/xen-blkback/blkback.c en la implementaci\u00f3n Xen blkback en el kernel de Linux anterior a v3.10.5 permite a usuarios invitados del sistema operativo provocar una denegaci\u00f3n de servicio (p\u00e9rdida de datos) a trav\u00e9s de operaciones de escritura del sistema de ficheros en un disco de s\u00f3lo lectura que soporte la funcionalidad BLKIF_OP_DISCARD (aka discard o TRIM) o SCSI UNMAP."}], "id": "CVE-2013-2140", "lastModified": "2025-04-11T00:51:21.963", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "ADJACENT_NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 3.8, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:A/AC:M/Au:S/C:N/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 4.4, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2013-09-25T10:31:29.067", "references": [{"source": "secalert@redhat.com", "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=604c499cbbcc3d5fe5fb8d53306aa0fae1990109"}, {"source": "secalert@redhat.com", "url": "http://people.canonical.com/~ubuntu-security/cve/2013/CVE-2013-2140.html"}, {"source": "secalert@redhat.com", "url": "http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.10.5"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2013/06/05/21"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-1938-1"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-1943-1"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-1944-1"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-1945-1"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-1946-1"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-1947-1"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-2038-1"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-2039-1"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=971146"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Patch"], "url": 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{"bugzilla": {"description": "kernel: xen: blkback: insufficient permission checks for BLKIF_OP_DISCARD", "id": "971146", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=971146"}, "csaw": false, "cvss": {"cvss_base_score": "3.8", "cvss_scoring_vector": "AV:A/AC:M/Au:S/C:N/I:P/A:P", "status": "draft"}, "details": ["The dispatch_discard_io function in drivers/block/xen-blkback/blkback.c in the Xen blkback implementation in the Linux kernel before 3.10.5 allows guest OS users to cause a denial of service (data loss) via filesystem write operations on a read-only disk that supports the (1) BLKIF_OP_DISCARD (aka discard or TRIM) or (2) SCSI UNMAP feature."], "name": "CVE-2013-2140", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel-xen", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "realtime-kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2013-06-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2013-2140\nhttps://nvd.nist.gov/vuln/detail/CVE-2013-2140"], "statement": "Not vulnerable.\nThis issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5 as it has no support for BLKIF_OP_DISCARD.\nThis issue did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2.", "threat_severity": "Moderate"}