cnvd-2021-34001
Vulnerability from cnvd
Title
Linux kernel越界内存访问漏洞
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 5.12.0-rc4之前版本中的f2fs模块中的fs/f2fs/node.c存在越界内存访问漏洞。该漏洞源于边界检查失败。攻击者可利用该漏洞导致系统崩溃或获取内部内核信息。
Severity
中
Patch Name
Linux kernel越界内存访问漏洞的补丁
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 5.12.0-rc4之前版本中的f2fs模块中的fs/f2fs/node.c存在越界内存访问漏洞。该漏洞源于边界检查失败。攻击者可利用该漏洞导致系统崩溃或获取内部内核信息。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

厂商已发布了漏洞修复程序，请及时关注更新： https://bugzilla.redhat.com/show_bug.cgi?id=1944298

Reference
https://nvd.nist.gov/vuln/detail/CVE-2021-3506
Impacted products
Name
Linux Linux kernel <5.12.0-rc4
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-3506",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-3506"
    }
  },
  "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 5.12.0-rc4\u4e4b\u524d\u7248\u672c\u4e2d\u7684f2fs\u6a21\u5757\u4e2d\u7684fs/f2fs/node.c\u5b58\u5728\u8d8a\u754c\u5185\u5b58\u8bbf\u95ee\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8fb9\u754c\u68c0\u67e5\u5931\u8d25\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7cfb\u7edf\u5d29\u6e83\u6216\u83b7\u53d6\u5185\u90e8\u5185\u6838\u4fe1\u606f\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://bugzilla.redhat.com/show_bug.cgi?id=1944298",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-34001",
  "openTime": "2021-05-11",
  "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 5.12.0-rc4\u4e4b\u524d\u7248\u672c\u4e2d\u7684f2fs\u6a21\u5757\u4e2d\u7684fs/f2fs/node.c\u5b58\u5728\u8d8a\u754c\u5185\u5b58\u8bbf\u95ee\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8fb9\u754c\u68c0\u67e5\u5931\u8d25\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7cfb\u7edf\u5d29\u6e83\u6216\u83b7\u53d6\u5185\u90e8\u5185\u6838\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\u8d8a\u754c\u5185\u5b58\u8bbf\u95ee\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Linux  Linux kernel \u003c5.12.0-rc4"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-3506",
  "serverity": "\u4e2d",
  "submitTime": "2021-04-20",
  "title": "Linux kernel\u8d8a\u754c\u5185\u5b58\u8bbf\u95ee\u6f0f\u6d1e"
}


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