CVE-2011-2189

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    CVE-2011-2189

    Published: 10 Oct 2011Last Modified: 10 Apr 2026

    Summary:

    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.

    References: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373, http://patchwork.ozlabs.org/patch/88217/, http://www.debian.org/security/2011/dsa-2305, http://www.openwall.com/lists/oss-security/2011/06/06/10, http://www.openwall.com/lists/oss-security/2011/06/06/20, http://www.ubuntu.com/usn/USN-1288-1, https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095, https://bugzilla.redhat.com/show_bug.cgi?id=711134, https://bugzilla.redhat.com/show_bug.cgi?id=711245, http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373, http://patchwork.ozlabs.org/patch/88217/, http://www.openwall.com/lists/oss-security/2011/06/06/10, http://www.openwall.com/lists/oss-security/2011/06/06/20, http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629373, https://bugs.launchpad.net/ubuntu/+source/linux/+bug/720095, https://bugzilla.redhat.com/show_bug.cgi?id=711134, https://bugzilla.redhat.com/show_bug.cgi?id=711245, http://patchwork.ozlabs.org/patch/88217/, https://bugzilla.redhat.com/show_bug.cgi?id=711245, https://bugzilla.redhat.com/show_bug.cgi?id=711134, https://bugzilla.redhat.com/show_bug.cgi?id=711245, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2b035b39970740722598f7a9d548835f9bdd730f, http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f875bae065334907796da12523f9df85c89f5712, http://ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33, http://kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289, http://neil.brown.name/git?p=linux-2.6%3Ba=patch%3Bh=2b035b39970740722598f7a9d548835f9bdd730f

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2011-2189 | CVE-DB