cnvd-2018-16312
Vulnerability from cnvd

Title: Linux kernel信息泄露漏洞（CNVD-2018-16312）

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之前版本中存在安全漏洞，该漏洞源于arch/x86/kernel/paravirt.c文件未能正确地处理非直接的调用。攻击者可利用该漏洞将内存内容泄露到CPU缓存中并读取主机内核内存。

Severity: 中

Patch Name: Linux kernel信息泄露漏洞（CNVD-2018-16312）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之前版本中存在安全漏洞，该漏洞源于arch/x86/kernel/paravirt.c文件没有正确地处理非直接的调用。攻击者可利用该漏洞将内存内容泄露到CPU缓存中并读取主机内核内存。 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:

厂商已发布了漏洞修复程序，请及时关注更新： https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1

Reference: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5800dc5c19f34e6e03b5adab1282535cb102fafd https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1 https://github.com/torvalds/linux/commit/5800dc5c19f34e6e03b5adab1282535cb102fafd https://twitter.com/grsecurity/status/1029324426142199808

Impacted products
Name
Linux Kernel <4.18.1
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-15594",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2018-15594"
    }
  },
  "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\r\n\r\nLinux kernel 4.18.1\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8earch/x86/kernel/paravirt.c\u6587\u4ef6\u672a\u80fd\u6b63\u786e\u5730\u5904\u7406\u975e\u76f4\u63a5\u7684\u8c03\u7528\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u5185\u5b58\u5185\u5bb9\u6cc4\u9732\u5230CPU\u7f13\u5b58\u4e2d\u5e76\u8bfb\u53d6\u4e3b\u673a\u5185\u6838\u5185\u5b58\u3002",
  "discovererName": "unknown",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-16312",
  "openTime": "2018-08-27",
  "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\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8earch/x86/kernel/paravirt.c\u6587\u4ef6\u6ca1\u6709\u6b63\u786e\u5730\u5904\u7406\u975e\u76f4\u63a5\u7684\u8c03\u7528\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5c06\u5185\u5b58\u5185\u5bb9\u6cc4\u9732\u5230CPU\u7f13\u5b58\u4e2d\u5e76\u8bfb\u53d6\u4e3b\u673a\u5185\u6838\u5185\u5b58\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-2018-16312\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel \u003c4.18.1"
  },
  "referenceLink": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5800dc5c19f34e6e03b5adab1282535cb102fafd\r\nhttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1\r\nhttps://github.com/torvalds/linux/commit/5800dc5c19f34e6e03b5adab1282535cb102fafd\r\nhttps://twitter.com/grsecurity/status/1029324426142199808",
  "serverity": "\u4e2d",
  "submitTime": "2018-08-22",
  "title": "Linux kernel\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2018-16312\uff09"
}


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