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    CVE-2012-2127

    fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd.

    Published:Apr 20, 2012
    Last Modified:Apr 11, 2025
    EPS:Jun 21, 2012
    EPSS Score:0.01921
    CVSS Score:5

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    http://www.openwall.com/lists/oss-security/2012/04/20/25https://bugzilla.novell.com/show_bug.cgi?id=757783https://bugzilla.redhat.com/show_bug.cgi?id=815188https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1http://www.openwall.com/lists/oss-security/2012/04/20/25https://bugzilla.novell.com/show_bug.cgi?id=757783https://bugzilla.redhat.com/show_bug.cgi?id=815188https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1

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    References

    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
    http://ubuntu.com/usn/usn-1607-1
    http://www.kernel.org/pub/linux/kernel/v3.x/
    http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2
    http://www.openwall.com/lists/oss-security/2012/04/20/25
    http://www.openwall.com/lists/oss-security/2012/04/22/1
    http://www.securityfocus.com/bid/55774
    http://www.ubuntu.com/usn/USN-1594-1
    https://bugzilla.novell.com/show_bug.cgi?id=757783
    https://bugzilla.redhat.com/show_bug.cgi?id=815188
    https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=905ad269c55fc62bee3da29f7b1d1efeba8aa1e1
    http://ubuntu.com/usn/usn-1607-1
    http://www.kernel.org/pub/linux/kernel/v3.x/
    http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.2.bz2
    http://www.openwall.com/lists/oss-security/2012/04/20/25
    http://www.openwall.com/lists/oss-security/2012/04/22/1
    http://www.securityfocus.com/bid/55774
    http://www.ubuntu.com/usn/USN-1594-1
    https://bugzilla.novell.com/show_bug.cgi?id=757783
    https://bugzilla.redhat.com/show_bug.cgi?id=815188
    https://github.com/torvalds/linux/commit/905ad269c55fc62bee3da29f7b1d1efeba8aa1e1

    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