Red Hat: 2014:0949-01: kernel: Important Advisory

    Date28 Jul 2014
    CategoryRed Hat
    1078
    Posted ByJoe Shakespeare
    Updated kernel packages that fix one security issue 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 update
    Advisory ID:       RHSA-2014:0949-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://rhn.redhat.com/errata/RHSA-2014-0949.html
    Issue date:        2014-07-28
    CVE Names:         CVE-2014-4699 
    =====================================================================
    
    1. Summary:
    
    Updated kernel packages that fix one security issue 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.
    
    * It was found that the Linux kernel's ptrace subsystem allowed a traced
    process' instruction pointer to be set to a non-canonical memory address
    without forcing the non-sysret code path when returning to user space.
    A local, unprivileged user could use this flaw to crash the system or,
    potentially, escalate their privileges on the system. (CVE-2014-4699,
    Important)
    
    Note: The CVE-2014-4699 issue only affected systems using an Intel CPU.
    
    Red Hat would like to thank Andy Lutomirski for reporting this issue.
    
    All kernel users are advised to upgrade to these updated packages, which
    contain a backported patch to correct this issue. 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/):
    
    1115927 - CVE-2014-4699 kernel: x86_64: ptrace: sysret to non-canonical address
    
    6. Package List:
    
    Red Hat Enterprise Linux AUS (v. 6.2 server):
    
    Source:
    kernel-2.6.32-220.53.1.el6.src.rpm
    
    noarch:
    kernel-doc-2.6.32-220.53.1.el6.noarch.rpm
    kernel-firmware-2.6.32-220.53.1.el6.noarch.rpm
    
    x86_64:
    kernel-2.6.32-220.53.1.el6.x86_64.rpm
    kernel-debug-2.6.32-220.53.1.el6.x86_64.rpm
    kernel-debug-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
    kernel-debug-devel-2.6.32-220.53.1.el6.x86_64.rpm
    kernel-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
    kernel-debuginfo-common-x86_64-2.6.32-220.53.1.el6.x86_64.rpm
    kernel-devel-2.6.32-220.53.1.el6.x86_64.rpm
    kernel-headers-2.6.32-220.53.1.el6.x86_64.rpm
    perf-2.6.32-220.53.1.el6.x86_64.rpm
    perf-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
    python-perf-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
    
    Red Hat Enterprise Linux Server Optional AUS (v. 6.2):
    
    Source:
    kernel-2.6.32-220.53.1.el6.src.rpm
    
    x86_64:
    kernel-debug-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
    kernel-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
    kernel-debuginfo-common-x86_64-2.6.32-220.53.1.el6.x86_64.rpm
    perf-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
    python-perf-2.6.32-220.53.1.el6.x86_64.rpm
    python-perf-debuginfo-2.6.32-220.53.1.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-2014-4699.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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