CVE-2018-12232

{"id": "CVE-2018-12232", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.1, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.2}]}, "published": "2018-06-12T12:29:00.210", "references": [{"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6d8c50dcb029872b298eea68cc6209c866fd3e14", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/bid/104453", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "https://access.redhat.com/errata/RHSA-2018:2948", "source": "cve@mitre.org"}, {"url": "https://github.com/torvalds/linux/commit/6d8c50dcb029872b298eea68cc6209c866fd3e14", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://lkml.org/lkml/2018/6/5/14", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://patchwork.ozlabs.org/patch/926519/", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://usn.ubuntu.com/3752-1/", "source": "cve@mitre.org"}, {"url": "https://usn.ubuntu.com/3752-2/", "source": "cve@mitre.org"}, {"url": "https://usn.ubuntu.com/3752-3/", "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-362"}]}], "descriptions": [{"lang": "en", "value": "In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash."}, {"lang": "es", "value": "En net/socket.c en el kernel de Linux hasta la versi\u00f3n 4.17.1, hay una condici\u00f3n de carrera entre fchownat y close en los casos en los que apuntan al mismo descriptor de archivo socket. Esto est\u00e1 relacionado con las funciones sock_close y sockfs_setattr. fchownat no incrementa el conteo de referencia del descriptor de archivos, lo que permite que close establezca el socket como NULL durante la ejecuci\u00f3n de fchownat lo que conduce a una desreferencia de puntero NULL y a un cierre inesperado del sistema."}], "lastModified": "2018-10-31T10:30:56.777", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5CF7338D-D530-4EEA-B1D6-926A91AC72BE", "versionEndIncluding": "4.17.1"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}