cnvd-2018-26906
Vulnerability from cnvd
Title
Linux kernel内存错误引用漏洞（CNVD-2018-26906）
Description
Linux kernel是一种计算机操作系统内核，以C语言和汇编语言写成，符合POSIX标准，按GNU通用公共许可证发行。 Linux kernel存在内存错误引用漏洞。该漏洞源于setsockopt的fanout_add和AF_PACKET套接字上的bind之间存在竞争条件。攻击者可利用该漏洞实现程序计数器控制并导致拒绝服务。
Severity
中
Patch Name
Linux kernel内存错误引用漏洞（CNVD-2018-26906）的补丁
Patch Description
Linux kernel是一种计算机操作系统内核，以C语言和汇编语言写成，符合POSIX标准，按GNU通用公共许可证发行。 Linux kernel存在内存错误引用漏洞。该漏洞源于setsockopt的fanout_add和AF_PACKET套接字上的bind之间存在竞争条件。攻击者可利用该漏洞实现程序计数器控制并导致拒绝服务。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

厂商已发布漏洞修复程序，请及时关注更新： https://www.kernel.org/

Reference
https://blogs.securiteam.com/index.php/archives/3731
Impacted products
Name
Linux kernel <=4.19
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-18559"
    }
  },
  "description": "Linux kernel\u662f\u4e00\u79cd\u8ba1\u7b97\u673a\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\uff0c\u4ee5C\u8bed\u8a00\u548c\u6c47\u7f16\u8bed\u8a00\u5199\u6210\uff0c\u7b26\u5408POSIX\u6807\u51c6\uff0c\u6309GNU\u901a\u7528\u516c\u5171\u8bb8\u53ef\u8bc1\u53d1\u884c\u3002\n\nLinux kernel\u5b58\u5728\u5185\u5b58\u9519\u8bef\u5f15\u7528\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8esetsockopt\u7684fanout_add\u548cAF_PACKET\u5957\u63a5\u5b57\u4e0a\u7684bind\u4e4b\u95f4\u5b58\u5728\u7ade\u4e89\u6761\u4ef6\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u73b0\u7a0b\u5e8f\u8ba1\u6570\u5668\u63a7\u5236\u5e76\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "Linux",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.kernel.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-26906",
  "openTime": "2018-12-27",
  "patchDescription": "Linux kernel\u662f\u4e00\u79cd\u8ba1\u7b97\u673a\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\uff0c\u4ee5C\u8bed\u8a00\u548c\u6c47\u7f16\u8bed\u8a00\u5199\u6210\uff0c\u7b26\u5408POSIX\u6807\u51c6\uff0c\u6309GNU\u901a\u7528\u516c\u5171\u8bb8\u53ef\u8bc1\u53d1\u884c\u3002\r\n\r\nLinux kernel\u5b58\u5728\u5185\u5b58\u9519\u8bef\u5f15\u7528\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8esetsockopt\u7684fanout_add\u548cAF_PACKET\u5957\u63a5\u5b57\u4e0a\u7684bind\u4e4b\u95f4\u5b58\u5728\u7ade\u4e89\u6761\u4ef6\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u73b0\u7a0b\u5e8f\u8ba1\u6570\u5668\u63a7\u5236\u5e76\u5bfc\u81f4\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": "Linux kernel\u5185\u5b58\u9519\u8bef\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2018-26906\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux kernel \u003c=4.19"
  },
  "referenceLink": "https://blogs.securiteam.com/index.php/archives/3731",
  "serverity": "\u4e2d",
  "submitTime": "2018-10-23",
  "title": "Linux kernel\u5185\u5b58\u9519\u8bef\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2018-26906\uff09"
}


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