cnvd-2021-48914
Vulnerability from cnvd
Title
Linux kernel缓冲区溢出漏洞（CNVD-2021-48914）
Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在缓冲区溢出漏洞，该漏洞源于net/netfilter/x_tables.c 中的堆越界写入。攻击者可利用该漏洞通过用户名空间获得权限或引起DoS。
Severity
中
Patch Name
Linux kernel缓冲区溢出漏洞（CNVD-2021-48914）的补丁
Patch Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在缓冲区溢出漏洞，该漏洞源于net/netfilter/x_tables.c 中的堆越界写入。攻击者可利用该漏洞通过用户名空间获得权限或引起DoS。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： https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528

Reference
https://nvd.nist.gov/vuln/detail/CVE-2021-22555
Impacted products
Name
Linux Linux kernel
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-22555"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8enet/netfilter/x_tables.c \u4e2d\u7684\u5806\u8d8a\u754c\u5199\u5165\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u7528\u6237\u540d\u7a7a\u95f4\u83b7\u5f97\u6743\u9650\u6216\u5f15\u8d77DoS\u3002",
  "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\nhttps://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-48914",
  "openTime": "2021-07-09",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8enet/netfilter/x_tables.c \u4e2d\u7684\u5806\u8d8a\u754c\u5199\u5165\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u7528\u6237\u540d\u7a7a\u95f4\u83b7\u5f97\u6743\u9650\u6216\u5f15\u8d77DoS\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\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-48914\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Linux kernel"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-22555",
  "serverity": "\u4e2d",
  "submitTime": "2021-07-09",
  "title": "Linux kernel\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-48914\uff09"
}


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