cnvd-2019-42726
Vulnerability from cnvd
Title
Linux kernel权限提升漏洞（CNVD-2019-42726）
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 5.3.8及更早版本中的drivers/media/platform/vivid存在权限提升漏洞。该漏洞源于vivid_stop_generating_vid_cap()、vivid_stop_generating_vid_out()、sdr_cap_stop_streaming()及相应的kthreads的互斥锁错误锁定。攻击者可利用该漏洞实现权限提升。
Severity
中
Patch Name
Linux kernel权限提升漏洞（CNVD-2019-42726）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 5.3.8及更早版本中的drivers/media/platform/vivid存在权限提升漏洞。该漏洞源于vivid_stop_generating_vid_cap()、vivid_stop_generating_vid_out()、sdr_cap_stop_streaming()及相应的kthreads的互斥锁错误锁定。攻击者可利用该漏洞实现权限提升。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://lore.kernel.org/lkml/20191103221719.27118-1-alex.popov@linux.com/

Reference
https://nvd.nist.gov/vuln/detail/CVE-2019-18683
Impacted products
Name
Linux Linux kernel <=5.3.8
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-18683",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-18683"
    }
  },
  "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 5.3.8\u53ca\u66f4\u65e9\u7248\u672c\u4e2d\u7684drivers/media/platform/vivid\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8evivid_stop_generating_vid_cap()\u3001vivid_stop_generating_vid_out()\u3001sdr_cap_stop_streaming()\u53ca\u76f8\u5e94\u7684kthreads\u7684\u4e92\u65a5\u9501\u9519\u8bef\u9501\u5b9a\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u73b0\u6743\u9650\u63d0\u5347\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://lore.kernel.org/lkml/20191103221719.27118-1-alex.popov@linux.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-42726",
  "openTime": "2019-11-28",
  "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 5.3.8\u53ca\u66f4\u65e9\u7248\u672c\u4e2d\u7684drivers/media/platform/vivid\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8evivid_stop_generating_vid_cap()\u3001vivid_stop_generating_vid_out()\u3001sdr_cap_stop_streaming()\u53ca\u76f8\u5e94\u7684kthreads\u7684\u4e92\u65a5\u9501\u9519\u8bef\u9501\u5b9a\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5b9e\u73b0\u6743\u9650\u63d0\u5347\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\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2019-42726\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Linux kernel \u003c=5.3.8"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-18683",
  "serverity": "\u4e2d",
  "submitTime": "2019-11-05",
  "title": "Linux kernel\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2019-42726\uff09"
}


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