cnvd-2018-24546
Vulnerability from cnvd
Title
Linux kernel拒绝服务漏洞（CNVD-2018-24546）
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 4.18.1及之前版本中的drivers/net/xen-netback/hash.c文件的‘xenvif_set_hash_mapping’函数存在安全漏洞，该漏洞源于程序未能进行输入验证或输入验证出错。攻击者可利用该漏洞造成后端越界访问内存，可能提升权限，造成拒绝服务或泄露信息。
Severity
中
Patch Name
Linux kernel拒绝服务漏洞（CNVD-2018-24546）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 4.18.1及之前版本中的drivers/net/xen-netback/hash.c文件的‘xenvif_set_hash_mapping’函数存在安全漏洞，该漏洞源于程序未能进行输入验证或输入验证出错。攻击者可利用该漏洞造成后端越界访问内存，可能提升权限，造成拒绝服务或泄露信息。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： http://xenbits.xen.org/xsa/advisory-270.html

Reference
http://xenbits.xen.org/xsa/advisory-270.html
Impacted products
Name
Linux Kernel <=4.18.1
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-15471",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15471"
    }
  },
  "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 4.18.1\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684drivers/net/xen-netback/hash.c\u6587\u4ef6\u7684\u2018xenvif_set_hash_mapping\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u8fdb\u884c\u8f93\u5165\u9a8c\u8bc1\u6216\u8f93\u5165\u9a8c\u8bc1\u51fa\u9519\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u540e\u7aef\u8d8a\u754c\u8bbf\u95ee\u5185\u5b58\uff0c\u53ef\u80fd\u63d0\u5347\u6743\u9650\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\u6216\u6cc4\u9732\u4fe1\u606f\u3002",
  "discovererName": "unknown",
  "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\nhttp://xenbits.xen.org/xsa/advisory-270.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-24546",
  "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 4.18.1\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684drivers/net/xen-netback/hash.c\u6587\u4ef6\u7684\u2018xenvif_set_hash_mapping\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u8fdb\u884c\u8f93\u5165\u9a8c\u8bc1\u6216\u8f93\u5165\u9a8c\u8bc1\u51fa\u9519\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u540e\u7aef\u8d8a\u754c\u8bbf\u95ee\u5185\u5b58\uff0c\u53ef\u80fd\u63d0\u5347\u6743\u9650\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\u6216\u6cc4\u9732\u4fe1\u606f\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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2018-24546\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel \u003c=4.18.1"
  },
  "referenceLink": "http://xenbits.xen.org/xsa/advisory-270.html",
  "serverity": "\u4e2d",
  "submitTime": "2018-08-21",
  "title": "Linux kernel\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2018-24546\uff09"
}


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