{ "id": "CVE-2016-9576", "sourceIdentifier": "secalert@redhat.com", "published": "2016-12-28T07:59:00.307", "lastModified": "2025-04-12T10:46:40.837", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [ { "lang": "en", "value": "The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel before 4.8.14 does not properly restrict the type of iterator, which allows local users to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging access to a /dev/sg device." }, { "lang": "es", "value": "La funci\u00f3n blk_rq_map_user_iov en block/blk-map.c en el kernel de Linux en versiones anteriores a 4.8.14 no restringe adecuadamente el tipo de iterador, lo que permite a usuarios locales leer o escribir a ubicaciones de memoria del kernel arbitrarias o provocar una denegaci\u00f3n de servicio (uso despu\u00e9s de liberaci\u00f3n de memoria) aprovechando acceso a un dispositivo /dev/sg." } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH" }, "exploitabilityScore": 1.8, "impactScore": 5.9 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "baseScore": 7.2, "accessVector": "LOCAL", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE" }, "baseSeverity": "HIGH", "exploitabilityScore": 3.9, "impactScore": 10.0, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-416" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.0", "versionEndExcluding": "4.4.38", "matchCriteriaId": "2D401B73-345B-49B5-B568-153C68F7F784" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "4.8.14", "matchCriteriaId": "2454EAB6-FC42-4FA4-BE76-CBAA81D4ADC4" } ] } ] } ], "references": [ { "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a0ac402cfcdc904f9772e1762b3fda112dcc56a0", "source": "secalert@redhat.com", "tags": [ "Patch", "Vendor Advisory" ] }, { "url": "http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00040.html", "source": 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