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en el Kernel de Linux en versiones anteriores a 4.3.5 no mantiene correctamente una estructura de datos hub-interface, lo que permite a atacantes f\u00edsicamente pr\u00f3ximos provocar una denegaci\u00f3n de servicio (acceso a memoria no v\u00e1lido y ca\u00edda de sistema) o posiblemente tener otro impacto no especificado desenchufando un dispositivo hub USB."}], "evaluatorComment": "CWE-476: NULL Pointer Dereference", "id": "CVE-2015-8816", "lastModified": "2024-11-21T02:39:15.250", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "[email protected]", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "PHYSICAL", "availabilityImpact": "HIGH", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.9, "impactScore": 5.9, "source": "[email protected]", "type": "Primary"}]}, "published": "2016-04-27T17:59:03.147", "references": [{"source": "[email protected]", "tags": ["Vendor Advisory"], "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e50293ef9775c5f1cf3fcc093037dd6a8c5684ea"}, {"source": "[email protected]", "tags": ["Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html"}, {"source": "[email protected]", "tags": 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{"bugzilla": {"description": "kernel: USB hub invalid memory access in hub_activate()", "id": "1311589", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1311589"}, "csaw": false, "cvss": {"cvss_base_score": "4.9", "cvss_scoring_vector": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "status": "draft"}, "cwe": "CWE-476", "details": ["The hub_activate function in drivers/usb/core/hub.c in the Linux kernel before 4.3.5 does not properly maintain a hub-interface data structure, which allows physically proximate attackers to cause a denial of service (invalid memory access and system crash) or possibly have unspecified other impact by unplugging a USB hub device."], "name": "CVE-2015-8816", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Will not fix", "package_name": "realtime-kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2016-02-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2015-8816\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-8816\nhttp://www.spinics.net/lists/linux-usb/msg132311.html"], "statement": "This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 as the code with the flaw is not present in the products listed.\nThis issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 6, 7, and Red Hat Enterprise MRG 2. This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.", "threat_severity": "Low"}