cnvd-2016-11670
Vulnerability from cnvd
Title
Linux kernel权限提升漏洞（CNVD-2016-11670）
Description
Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。 Linux kernel 4.4.22至4.4.28版本中的arch/x86/include/asm/uaccess.h文件中的__get_user_asm_ex宏存在安全漏洞。本地攻击者可借助特制的应用程序利用该漏洞获取non-SMEP平台上的root权限。
Severity
高
Patch Name
Linux kernel权限提升漏洞（CNVD-2016-11670）的补丁
Patch Description
Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。 Linux kernel 4.4.22至4.4.28版本中的arch/x86/include/asm/uaccess.h文件中的__get_user_asm_ex宏存在安全漏洞。本地攻击者可借助特制的应用程序利用该漏洞获取non-SMEP平台上的root权限。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接： https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c109fabbd51863475cd12ac206bdd249aee35af

Reference
http://www.securityfocus.com/bid/94545 http://www.openwall.com/lists/oss-security/2016/11/07/4
Impacted products
Name
Linux Kernel >=4.4.22，<=4.4.28
Show details on source website

To clipboard 

{
  "bids": {
    "bid": {
      "bidNumber": "94545"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-9644"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.4.22\u81f34.4.28\u7248\u672c\u4e2d\u7684arch/x86/include/asm/uaccess.h\u6587\u4ef6\u4e2d\u7684__get_user_asm_ex\u5b8f\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684\u5e94\u7528\u7a0b\u5e8f\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6non-SMEP\u5e73\u53f0\u4e0a\u7684root\u6743\u9650\u3002",
  "discovererName": "Linux",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1c109fabbd51863475cd12ac206bdd249aee35af",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-11670",
  "openTime": "2016-11-30",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.4.22\u81f34.4.28\u7248\u672c\u4e2d\u7684arch/x86/include/asm/uaccess.h\u6587\u4ef6\u4e2d\u7684__get_user_asm_ex\u5b8f\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684\u5e94\u7528\u7a0b\u5e8f\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6non-SMEP\u5e73\u53f0\u4e0a\u7684root\u6743\u9650\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Linux kernel\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2016-11670\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel \u003e=4.4.22\uff0c\u003c=4.4.28"
  },
  "referenceLink": "http://www.securityfocus.com/bid/94545\r\nhttp://www.openwall.com/lists/oss-security/2016/11/07/4",
  "serverity": "\u9ad8",
  "submitTime": "2016-11-29",
  "title": "Linux kernel\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2016-11670\uff09"
}


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