{
    "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2011-2189",
        "STATE": "PUBLIC"
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                                "version": {
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    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "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."
            }
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        "reference_data": [
            {
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=711245",
                "refsource": "CONFIRM",
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=711245"
            },
            {
                "name": "https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095",
                "refsource": "CONFIRM",
                "url": "https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095"
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            {
                "name": "http://neil.brown.name/git?p=linux-2.6;a=patch;h=2b035b39970740722598f7a9d548835f9bdd730f",
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                "url": "http://neil.brown.name/git?p=linux-2.6;a=patch;h=2b035b39970740722598f7a9d548835f9bdd730f"
            },
            {
                "name": "[oss-security] 20110606 Re: CVE Request -- vsftpd -- Do not create network namespace per connection",
                "refsource": "MLIST",
                "url": "http://www.openwall.com/lists/oss-security/2011/06/06/20"
            },
            {
                "name": "[oss-security] 20110606 Re: CVE Request -- vsftpd -- Do not create network namespace per connection",
                "refsource": "MLIST",
                "url": "http://www.openwall.com/lists/oss-security/2011/06/06/10"
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                "name": "http://ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33",
                "refsource": "CONFIRM",
                "url": "http://ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33"
            },
            {
                "name": "DSA-2305",
                "refsource": "DEBIAN",
                "url": "http://www.debian.org/security/2011/dsa-2305"
            },
            {
                "name": "http://patchwork.ozlabs.org/patch/88217/",
                "refsource": "CONFIRM",
                "url": "http://patchwork.ozlabs.org/patch/88217/"
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            {
                "name": "[git-commits-head] 20091208 net: Automatically allocate per namespace data.",
                "refsource": "MLIST",
                "url": "http://kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289"
            },
            {
                "name": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373",
                "refsource": "CONFIRM",
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                "url": "http://www.ubuntu.com/usn/USN-1288-1"
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                "name": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2b035b39970740722598f7a9d548835f9bdd730f",
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                "name": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f875bae065334907796da12523f9df85c89f5712",
                "refsource": "CONFIRM",
                "url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f875bae065334907796da12523f9df85c89f5712"
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            {
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=711134",
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                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=711134"
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