cnvd-2016-00121
Vulnerability from cnvd
Title
Android kernel/sys.c权限提升漏洞
Description
Android是基于Linux开放性内核的手机操作系统。 Android 5.1.1 LMY49F之前版本、2016-01-01之前的6.0版本中的kernel/sys.c内prctl_set_vma_anon_name函数未确保一个更新操作中仅访问一个vma，在实现上存在安全漏洞。远程攻击者利用漏洞通过构造的应用，可获取提升的权限或造成拒绝服务。
Severity
高
Patch Name
Android kernel/sys.c权限提升漏洞的补丁
Patch Description
Android是基于Linux开放性内核的手机操作系统。 Android 5.1.1 LMY49F之前版本、2016-01-01之前的6.0版本中的kernel/sys.c内prctl_set_vma_anon_name函数未确保一个更新操作中仅访问一个vma，在实现上存在安全漏洞。远程攻击者利用漏洞通过构造的应用，可获取提升的权限或造成拒绝服务。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这个安全问题，请到厂商的主页下载： http://source.android.com/security/bulletin/2016-01-01.html

Reference
http://source.android.com/security/bulletin/2016-01-01.html
Impacted products
Name
['Google Android 5.x(<5.1.1 LMY49F)', 'Google Android \r\n6.0(<2016-01-01)']
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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2015-6640"
    }
  },
  "description": "Android\u662f\u57fa\u4e8eLinux\u5f00\u653e\u6027\u5185\u6838\u7684\u624b\u673a\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nAndroid 5.1.1 LMY49F\u4e4b\u524d\u7248\u672c\u30012016-01-01\u4e4b\u524d\u76846.0\u7248\u672c\u4e2d\u7684kernel/sys.c\u5185prctl_set_vma_anon_name\u51fd\u6570\u672a\u786e\u4fdd\u4e00\u4e2a\u66f4\u65b0\u64cd\u4f5c\u4e2d\u4ec5\u8bbf\u95ee\u4e00\u4e2avma\uff0c\u5728\u5b9e\u73b0\u4e0a\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u5229\u7528\u6f0f\u6d1e\u901a\u8fc7\u6784\u9020\u7684\u5e94\u7528\uff0c\u53ef\u83b7\u53d6\u63d0\u5347\u7684\u6743\u9650\u6216\u9020\u6210\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "Yabin Cui from Android Bionic Team",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u8fd9\u4e2a\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u5230\u5382\u5546\u7684\u4e3b\u9875\u4e0b\u8f7d\uff1a\r\nhttp://source.android.com/security/bulletin/2016-01-01.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-00121",
  "openTime": "2016-01-11",
  "patchDescription": "Android\u662f\u57fa\u4e8eLinux\u5f00\u653e\u6027\u5185\u6838\u7684\u624b\u673a\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nAndroid 5.1.1 LMY49F\u4e4b\u524d\u7248\u672c\u30012016-01-01\u4e4b\u524d\u76846.0\u7248\u672c\u4e2d\u7684kernel/sys.c\u5185prctl_set_vma_anon_name\u51fd\u6570\u672a\u786e\u4fdd\u4e00\u4e2a\u66f4\u65b0\u64cd\u4f5c\u4e2d\u4ec5\u8bbf\u95ee\u4e00\u4e2avma\uff0c\u5728\u5b9e\u73b0\u4e0a\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u5229\u7528\u6f0f\u6d1e\u901a\u8fc7\u6784\u9020\u7684\u5e94\u7528\uff0c\u53ef\u83b7\u53d6\u63d0\u5347\u7684\u6743\u9650\u6216\u9020\u6210\u62d2\u7edd\u670d\u52a1\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": "Android kernel/sys.c\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Google Android 5.x(\u003c5.1.1 LMY49F)",
      "Google Android \r\n6.0(\u003c2016-01-01)"
    ]
  },
  "referenceLink": "http://source.android.com/security/bulletin/2016-01-01.html",
  "serverity": "\u9ad8",
  "submitTime": "2016-01-08",
  "title": "Android kernel/sys.c\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}


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