{
  "modified": "2025-08-09T19:01:26Z",
  "published": "2011-10-10T10:55:05Z",
  "id": "CVE-2011-2189",
  "details": "net/core/net_namespace.c in the Linux kernel 2.6.32 and earlier does not properly handle a high rate of creation and cleanup of network namespaces, which makes it easier for remote attackers to cause a denial of service (memory consumption) via requests to a daemon that requires a separate namespace per connection, as demonstrated by vsftpd.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373"
    },
    {
      "type": "ADVISORY",
      "url": "http://patchwork.ozlabs.org/patch/88217/"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.debian.org/security/2011/dsa-2305"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.openwall.com/lists/oss-security/2011/06/06/10"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.openwall.com/lists/oss-security/2011/06/06/20"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.ubuntu.com/usn/USN-1288-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095"
    },
    {
      "type": "ADVISORY",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=711134"
    },
    {
      "type": "ADVISORY",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=711245"
    },
    {
      "type": "ARTICLE",
      "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373"
    },
    {
      "type": "ARTICLE",
      "url": "http://patchwork.ozlabs.org/patch/88217/"
    },
    {
      "type": "ARTICLE",
      "url": "http://www.openwall.com/lists/oss-security/2011/06/06/10"
    },
    {
      "type": "ARTICLE",
      "url": "http://www.openwall.com/lists/oss-security/2011/06/06/20"
    },
    {
      "type": "EVIDENCE",
      "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373"
    },
    {
      "type": "EVIDENCE",
      "url": "https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095"
    },
    {
      "type": "EVIDENCE",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=711134"
    },
    {
      "type": "EVIDENCE",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=711245"
    },
    {
      "type": "FIX",
      "url": "http://patchwork.ozlabs.org/patch/88217/"
    },
    {
      "type": "FIX",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=711245"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=711134"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=711245"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2b035b39970740722598f7a9d548835f9bdd730f"
    },
    {
      "type": "WEB",
      "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f875bae065334907796da12523f9df85c89f5712"
    },
    {
      "type": "WEB",
      "url": "http://ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33"
    },
    {
      "type": "WEB",
      "url": "http://kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289"
    },
    {
      "type": "WEB",
      "url": "http://neil.brown.name/git?p=linux-2.6%3Ba=patch%3Bh=2b035b39970740722598f7a9d548835f9bdd730f"
    }
  ]
}