CVE-2016-9644

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:4.4.22:*:*:*:*:*:*:*", "matchCriteriaId": "69FD6F60-3836-4F63-826D-FC3CBAE3D338", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.4.23:*:*:*:*:*:*:*", "matchCriteriaId": "04EB1200-5662-4AB8-913F-7517471BA12F", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.4.24:*:*:*:*:*:*:*", "matchCriteriaId": "96CBD63C-722B-4D8E-BD73-9DB23831B291", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.4.25:*:*:*:*:*:*:*", "matchCriteriaId": "6959AD65-8A87-4B9F-A829-1ED0294FE222", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.4.26:*:*:*:*:*:*:*", "matchCriteriaId": "273AF0D4-6C6A-4068-8C40-A4D1F0B30824", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.4.27:*:*:*:*:*:*:*", "matchCriteriaId": "C8019864-3F8D-461A-A34A-EA0EDA13A763", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.4.28:*:*:*:*:*:*:*", "matchCriteriaId": "7F69BAE1-5306-4A37-B97A-C0AF1E7E84B1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel 4.4.22 through 4.4.28 contains extended asm statements that are incompatible with the exception table, which allows local users to obtain root access on non-SMEP platforms via a crafted application. NOTE: this vulnerability exists because of incorrect backporting of the CVE-2016-9178 patch to older kernels."}, {"lang": "es", "value": "El macro __get_user_asm_ex en arch/x86/include/asm/uaccess.h en el kernel Linux 4.4.22 hasta la versi\u00f3n 4.4.28 contiene declaraciones asm extendidas que son incompatibles con la tabla de excepci\u00f3n, lo que permite a usuarios locales obtener acceso de root en plataformas non-SMEP a trav\u00e9s de una aplicaci\u00f3n manipulada. NOTA: esta vulnerabilidad existe debido a un incorrecto backporting del parche CVE-2016-9178 en kernels antiguos."}], "id": "CVE-2016-9644", "lastModified": "2026-06-17T00:56:24.060", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 9.3, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2016-11-28T03:59:18.283", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/11/07/4"}, {"source": "cve@mitre.org", "url": "http://www.securityfocus.com/bid/94545"}, {"source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-3146-1"}, {"source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-3146-2"}, {"source": "cve@mitre.org", "tags": ["Product"], "url": "https://lwn.net/Articles/705220/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2016/11/07/4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/94545"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-3146-1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-3146-2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Product"], "url": "https://lwn.net/Articles/705220/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-264"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: Incorrect fix for CVE-2016-9178", "id": "1399528", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1399528"}, "csaw": false, "cvss": {"cvss_base_score": "6.2", "cvss_scoring_vector": "AV:L/AC:H/Au:N/C:C/I:C/A:C", "status": "draft"}, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel 4.4.22 through 4.4.28 contains extended asm statements that are incompatible with the exception table, which allows local users to obtain root access on non-SMEP platforms via a crafted application. NOTE: this vulnerability exists because of incorrect backporting of the CVE-2016-9178 patch to older kernels."], "name": "CVE-2016-9644", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "realtime-kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2016-11-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-9644\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-9644"], "threat_severity": "Important"}

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