CVE-2015-7550

{"id": "CVE-2015-7550", "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}], "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": "2016-02-08T03:59:02.010", "references": [{"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b4a1b4f5047e4f54e194681125c74c0aa64d637d", "tags": ["Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html", "source": "secalert@redhat.com"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html", "source": "secalert@redhat.com"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html", "source": "secalert@redhat.com"}, {"url": "http://www.debian.org/security/2016/dsa-3434", "source": "secalert@redhat.com"}, {"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4", "tags": ["Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "http://www.securityfocus.com/bid/79903", "source": "secalert@redhat.com"}, {"url": "http://www.ubuntu.com/usn/USN-2888-1", "source": "secalert@redhat.com"}, {"url": "http://www.ubuntu.com/usn/USN-2890-1", "source": "secalert@redhat.com"}, {"url": "http://www.ubuntu.com/usn/USN-2890-2", "source": "secalert@redhat.com"}, {"url": "http://www.ubuntu.com/usn/USN-2890-3", "source": "secalert@redhat.com"}, {"url": "http://www.ubuntu.com/usn/USN-2911-1", "source": "secalert@redhat.com"}, {"url": "http://www.ubuntu.com/usn/USN-2911-2", "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1291197", "source": "secalert@redhat.com"}, {"url": "https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637d", "source": "secalert@redhat.com"}, {"url": "https://security-tracker.debian.org/tracker/CVE-2015-7550", "source": "secalert@redhat.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "NVD-CWE-Other"}]}], "descriptions": [{"lang": "en", "value": "The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls."}, {"lang": "es", "value": "La funci\u00f3n keyctl_read_key en security/keys/keyctl.c en el kernel de Linux en versiones anteriores a 4.3.4 no utiliza adecuadamente un sem\u00e1foro, lo que permite a usuarios locales provocar una denegaci\u00f3n de servicio (referencia a puntero NULL y ca\u00edda del sistema) o posiblemente tiene otro impacto no especificado a trav\u00e9s de una aplicaci\u00f3n manipulada que aprovecha una condici\u00f3n de carrera entre llamadas keyctl_revoke y keyctl_read."}], "lastModified": "2017-11-04T01:29:09.457", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "35E3DC8E-8900-4874-A272-E3EC1174360B", "versionEndIncluding": "4.3.3"}], "operator": "OR"}]}], "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/476.html\">CWE-476: NULL Pointer Dereference</a>", "sourceIdentifier": "secalert@redhat.com"}