cnvd-2018-24551
Vulnerability from cnvd
Title
Linux kernel信息泄露漏洞（CNVD-2018-24551）
Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.14.8之前版本中的kernel/time/posix-timers.c文件存在安全漏洞，该漏洞源于timer_create系统调用的实现没有正确地验证sigevent->sigev_notify字段。攻击者可利用该漏洞读取任意的内核内存（越界读取）。
Severity
低
Patch Name
Linux kernel信息泄露漏洞（CNVD-2018-24551）的补丁
Patch Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.14.8之前版本中的kernel/time/posix-timers.c文件存在安全漏洞，该漏洞源于timer_create系统调用的实现没有正确地验证sigevent->sigev_notify字段。攻击者可利用该漏洞读取任意的内核内存（越界读取）。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8

Reference
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8 https://www.securityfocus.com/bid/104909
Impacted products
Name
Linux kernel <4.14.8
Show details on source website

To clipboard 

{
  "bids": {
    "bid": {
      "bidNumber": "104909"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-18344",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18344"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel 4.14.8\u4e4b\u524d\u7248\u672c\u4e2d\u7684kernel/time/posix-timers.c\u6587\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8etimer_create\u7cfb\u7edf\u8c03\u7528\u7684\u5b9e\u73b0\u6ca1\u6709\u6b63\u786e\u5730\u9a8c\u8bc1sigevent-\u003esigev_notify\u5b57\u6bb5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bfb\u53d6\u4efb\u610f\u7684\u5185\u6838\u5185\u5b58\uff08\u8d8a\u754c\u8bfb\u53d6\uff09\u3002",
  "discovererName": "Linux",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-24551",
  "openTime": "2018-12-04",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.14.8\u4e4b\u524d\u7248\u672c\u4e2d\u7684kernel/time/posix-timers.c\u6587\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8etimer_create\u7cfb\u7edf\u8c03\u7528\u7684\u5b9e\u73b0\u6ca1\u6709\u6b63\u786e\u5730\u9a8c\u8bc1sigevent-\u003esigev_notify\u5b57\u6bb5\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bfb\u53d6\u4efb\u610f\u7684\u5185\u6838\u5185\u5b58\uff08\u8d8a\u754c\u8bfb\u53d6\uff09\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\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2018-24551\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux kernel \u003c4.14.8"
  },
  "referenceLink": "https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8\r\nhttps://www.securityfocus.com/bid/104909",
  "serverity": "\u4f4e",
  "submitTime": "2018-07-31",
  "title": "Linux kernel\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2018-24551\uff09"
}


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