CVE-2015-4177

{"id": "CVE-2015-4177", "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": "UNCHANGED", "version": "3.0", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2016-05-02T10:59:15.203", "references": [{"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cd4a40174b71acd021877341684d8bb1dc8ea4ae", "tags": ["Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "http://openwall.com/lists/oss-security/2015/05/29/10", "source": "secalert@redhat.com"}, {"url": "http://openwall.com/lists/oss-security/2015/05/29/5", "source": "secalert@redhat.com"}, {"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.5", "source": "secalert@redhat.com"}, {"url": "http://www.openwall.com/lists/oss-security/2015/06/04/5", "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1248486", "source": "secalert@redhat.com"}, {"url": "https://github.com/torvalds/linux/commit/cd4a40174b71acd021877341684d8bb1dc8ea4ae", "tags": ["Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cd4a40174b71acd021877341684d8bb1dc8ea4ae", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://openwall.com/lists/oss-security/2015/05/29/10", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://openwall.com/lists/oss-security/2015/05/29/5", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.5", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2015/06/04/5", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1248486", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/torvalds/linux/commit/cd4a40174b71acd021877341684d8bb1dc8ea4ae", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}], "descriptions": [{"lang": "en", "value": "The collect_mounts function in fs/namespace.c in the Linux kernel before 4.0.5 does not properly consider that it may execute after a path has been unmounted, which allows local users to cause a denial of service (system crash) by leveraging user-namespace root access for an MNT_DETACH umount2 system call."}, {"lang": "es", "value": "La funci\u00f3n collect_mounts en fs/namespace.c en el kernel de Linux en versiones anteriores a 4.0.5 no considera correctamente que se pueda ejecutar despu\u00e9s de que una ruta sea desmontada, lo que permite a usuarios locales provocar una denegaci\u00f3n de servicio (ca\u00edda de sistema) aprovechando acceso root al espacio de nombres de usuario para una llamada de sistema MNT_DETACH umount2."}], "lastModified": "2024-11-21T02:30:34.583", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C2A79CCA-B60A-4054-830E-B89A2CB2ABEF", "versionEndIncluding": "4.0.4"}], "operator": "OR"}]}], "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/476.html\">CWE-476: NULL Pointer Dereference</a>", "sourceIdentifier": "secalert@redhat.com"}