Red Hat: 2014:1025-01: kernel: Important Advisory

    Date06 Aug 2014
    CategoryRed Hat
    951
    Posted ByJoe Shakespeare
    Updated kernel packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 6.2 Advanced Update Support. The Red Hat Security Response Team has rated this update as having [More...]
    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Important: kernel security and bug fix update
    Advisory ID:       RHSA-2014:1025-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://rhn.redhat.com/errata/RHSA-2014-1025.html
    Issue date:        2014-08-06
    CVE Names:         CVE-2014-4943 
    =====================================================================
    
    1. Summary:
    
    Updated kernel packages that fix one security issue and one bug are now
    available for Red Hat Enterprise Linux 6.2 Advanced Update Support.
    
    The Red Hat Security Response Team has rated this update as having
    Important security impact. A Common Vulnerability Scoring System (CVSS)
    base score, which gives a detailed severity rating, is available from the
    CVE link in the References section.
    
    2. Relevant releases/architectures:
    
    Red Hat Enterprise Linux AUS (v. 6.2 server) - noarch, x86_64
    Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64
    
    3. Description:
    
    The kernel packages contain the Linux kernel, the core of any Linux
    operating system.
    
    * A flaw was found in the way the pppol2tp_setsockopt() and
    pppol2tp_getsockopt() functions in the Linux kernel's PPP over L2TP
    implementation handled requests with a non-SOL_PPPOL2TP socket option
    level. A local, unprivileged user could use this flaw to escalate their
    privileges on the system. (CVE-2014-4943, Important)
    
    Red Hat would like to thank Sasha Levin for reporting this issue.
    
    This update also fixes the following bug:
    
    * When a device was registered to a bus, a race condition could occur
    between the device being added to the list of devices of the bus and
    binding the device to a driver. As a result, the device could already be
    bound to a driver which led to a warning and incorrect reference counting,
    and consequently to a kernel panic on device removal. To avoid the race
    condition, this update adds a check to identify an already bound device.
    (BZ#1114409)
    
    All kernel users are advised to upgrade to these updated packages, which
    contain backported patches to correct these issues. The system must be
    rebooted for this update to take effect.
    
    4. Solution:
    
    Before applying this update, make sure all previously released errata
    relevant to your system have been applied.
    
    This update is available via the Red Hat Network. Details on how to use the
    Red Hat Network to apply this update are available at
    https://access.redhat.com/articles/11258
    
    To install kernel packages manually, use "rpm -ivh [package]". Do not use
    "rpm -Uvh" as that will remove the running kernel binaries from your
    system. You may use "rpm -e" to remove old kernels after determining that
    the new kernel functions properly on your system.
    
    5. Bugs fixed (https://bugzilla.redhat.com/):
    
    1119458 - CVE-2014-4943 kernel: net: pppol2tp: level handling in pppol2tp_[s,g]etsockopt()
    
    6. Package List:
    
    Red Hat Enterprise Linux AUS (v. 6.2 server):
    
    Source:
    kernel-2.6.32-220.54.1.el6.src.rpm
    
    noarch:
    kernel-doc-2.6.32-220.54.1.el6.noarch.rpm
    kernel-firmware-2.6.32-220.54.1.el6.noarch.rpm
    
    x86_64:
    kernel-2.6.32-220.54.1.el6.x86_64.rpm
    kernel-debug-2.6.32-220.54.1.el6.x86_64.rpm
    kernel-debug-debuginfo-2.6.32-220.54.1.el6.x86_64.rpm
    kernel-debug-devel-2.6.32-220.54.1.el6.x86_64.rpm
    kernel-debuginfo-2.6.32-220.54.1.el6.x86_64.rpm
    kernel-debuginfo-common-x86_64-2.6.32-220.54.1.el6.x86_64.rpm
    kernel-devel-2.6.32-220.54.1.el6.x86_64.rpm
    kernel-headers-2.6.32-220.54.1.el6.x86_64.rpm
    perf-2.6.32-220.54.1.el6.x86_64.rpm
    perf-debuginfo-2.6.32-220.54.1.el6.x86_64.rpm
    python-perf-debuginfo-2.6.32-220.54.1.el6.x86_64.rpm
    
    Red Hat Enterprise Linux Server Optional AUS (v. 6.2):
    
    Source:
    kernel-2.6.32-220.54.1.el6.src.rpm
    
    x86_64:
    kernel-debug-debuginfo-2.6.32-220.54.1.el6.x86_64.rpm
    kernel-debuginfo-2.6.32-220.54.1.el6.x86_64.rpm
    kernel-debuginfo-common-x86_64-2.6.32-220.54.1.el6.x86_64.rpm
    perf-debuginfo-2.6.32-220.54.1.el6.x86_64.rpm
    python-perf-2.6.32-220.54.1.el6.x86_64.rpm
    python-perf-debuginfo-2.6.32-220.54.1.el6.x86_64.rpm
    
    These packages are GPG signed by Red Hat for security.  Our key and
    details on how to verify the signature are available from
    https://access.redhat.com/security/team/key/#package
    
    7. References:
    
    https://www.redhat.com/security/data/cve/CVE-2014-4943.html
    https://access.redhat.com/security/updates/classification/#important
    
    8. Contact:
    
    The Red Hat security contact is .  More contact
    details at https://access.redhat.com/security/team/contact/
    
    Copyright 2014 Red Hat, Inc.
    
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