fkie_cve-2016-9644
Vulnerability from fkie_nvd
Published
2016-11-28 03:59
Modified
2025-04-12 10:46
Severity ?
Summary
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.
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
linux | linux_kernel | 4.4.22 | |
linux | linux_kernel | 4.4.23 | |
linux | linux_kernel | 4.4.24 | |
linux | linux_kernel | 4.4.25 | |
linux | linux_kernel | 4.4.26 | |
linux | linux_kernel | 4.4.27 | |
linux | linux_kernel | 4.4.28 |
{ "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": "2025-04-12T10:46:40.837", "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": "Deferred", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-264" } ], "source": "nvd@nist.gov", "type": "Primary" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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