CVE-2017-12190

{"id": "CVE-2017-12190", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 6.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 2.0}]}, "published": "2017-11-22T18:29:00.477", "references": [{"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b04e8f6bbb196cab4b232af0f8d48ff2c7a8058", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95d78c28b5a85bacbc29b8dba7c04babb9b0d467", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "http://seclists.org/oss-sec/2017/q4/52", "tags": ["Issue Tracking", "Mailing List", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.8", "tags": ["Issue Tracking", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "http://www.securityfocus.com/bid/101911", "tags": ["Issue Tracking", "Third Party Advisory", "VDB Entry"], "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2018:0654", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2018:0676", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2018:1062", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2018:1854", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2019:1170", "source": "secalert@redhat.com"}, {"url": "https://access.redhat.com/errata/RHSA-2019:1190", "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1495089", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "https://github.com/torvalds/linux/commit/2b04e8f6bbb196cab4b232af0f8d48ff2c7a8058", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "https://github.com/torvalds/linux/commit/95d78c28b5a85bacbc29b8dba7c04babb9b0d467", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html", "source": "secalert@redhat.com"}, {"url": "https://support.f5.com/csp/article/K93472064?utm_source=f5support&amp%3Butm_medium=RSS", "source": "secalert@redhat.com"}, {"url": "https://usn.ubuntu.com/3582-1/", "source": "secalert@redhat.com"}, {"url": "https://usn.ubuntu.com/3582-2/", "source": "secalert@redhat.com"}, {"url": "https://usn.ubuntu.com/3583-1/", "source": "secalert@redhat.com"}, {"url": "https://usn.ubuntu.com/3583-2/", "source": "secalert@redhat.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-400"}]}, {"type": "Secondary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-772"}]}], "descriptions": [{"lang": "en", "value": "The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition."}, {"lang": "es", "value": "Las funciones bio_map_user_iov y bio_unmap_user en block/bio.c en el kernel de Linux en versiones anteriores a la 4.13.8 realizan un refcount no equilibrado cuando un vector SCSI I/O tiene b\u00faferes peque\u00f1os consecutivos que pertenecen a la misma p\u00e1gina. La funci\u00f3n bio_add_pc_page los combina en uno solo, pero la referencia de la p\u00e1gina nunca se anula. Esto provoca una fuga de memoria y un posible bloqueo del sistema (explotable contra el host del sistema operativo por un usuario invitado del sistema operativo, si se pasa un disco SCSI a una m\u00e1quina virtual) debido a una condici\u00f3n de falta de memoria."}], "lastModified": "2023-02-12T23:27:30.660", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "11C6B206-8716-4A16-81BD-F3B8C8ACBE19", "versionEndIncluding": "4.13.7"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}