Red Hat: 2012:1430-01: kernel: Important Advisory

    Date08 Nov 2012
    CategoryRed Hat
    2908
    Posted ByJoe Shakespeare
    Updated kernel packages that fix one security issue and three bugs are now available for Red Hat Enterprise Linux 6.1 Extended 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-2012:1430-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-1430.html
    Issue date:        2012-11-06
    CVE Names:         CVE-2012-3412 
    =====================================================================
    
    1. Summary:
    
    Updated kernel packages that fix one security issue and three bugs are now
    available for Red Hat Enterprise Linux 6.1 Extended 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 Server EUS (v. 6.1) - i386, noarch, ppc64, s390x, x86_64
    
    3. Description:
    
    The kernel packages contain the Linux kernel, the core of any Linux
    operating system.
    
    This update fixes the following security issue:
    
    * A flaw was found in the way socket buffers (skb) requiring TSO (TCP
    segment offloading) were handled by the sfc driver. If the skb did not fit
    within the minimum-size of the transmission queue, the network card could
    repeatedly reset itself. A remote attacker could use this flaw to cause a
    denial of service. (CVE-2012-3412, Important)
    
    Red Hat would like to thank Ben Hutchings of Solarflare (tm) for reporting
    this issue.
    
    This update also fixes the following bugs:
    
    * In the hpet_next_event() function, an interrupt could have occurred
    between the read and write of the HPET (High Precision Event Timer) and the
    value of HPET_COUNTER was then beyond that being written to the comparator
    (HPET_Tn_CMP). Consequently, the timers were overdue for up to several
    minutes. Now, a comparison is performed between the value of the counter
    and the comparator in the HPET code. If the counter is beyond the
    comparator, the "-ETIME" error code is returned, which fixes this bug.
    (BZ#855280)
    
    * Traffic to the NFS server could trigger a kernel oops in the
    svc_tcp_clear_pages() function. The source code has been modified, and the
    kernel oops no longer occurs in this scenario. (BZ#856104)
    
    * A kernel oops occurred in the nf_nat code when a bogus pointer was
    dereferenced in the nf_conn_nat structure. Consequently, if Source Network
    Address Translation (SNAT) was performed, incorrect information could be
    received by other CTS (Clear to Send) signals. A conntrack entry is now
    placed in the source hash after SNAT has been completed, which prevents the
    described problems. (BZ#865714)
    
    Users should upgrade to these updated packages, which contain backported
    patches to resolve 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/knowledge/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 (http://bugzilla.redhat.com/):
    
    844714 - CVE-2012-3412 kernel: sfc: potential remote denial of service through TCP MSS option
    
    6. Package List:
    
    Red Hat Enterprise Linux Server EUS (v. 6.1):
    
    Source:
    kernel-2.6.32-131.35.1.el6.src.rpm
    
    i386:
    kernel-2.6.32-131.35.1.el6.i686.rpm
    kernel-debug-2.6.32-131.35.1.el6.i686.rpm
    kernel-debug-debuginfo-2.6.32-131.35.1.el6.i686.rpm
    kernel-debug-devel-2.6.32-131.35.1.el6.i686.rpm
    kernel-debuginfo-2.6.32-131.35.1.el6.i686.rpm
    kernel-debuginfo-common-i686-2.6.32-131.35.1.el6.i686.rpm
    kernel-devel-2.6.32-131.35.1.el6.i686.rpm
    kernel-headers-2.6.32-131.35.1.el6.i686.rpm
    perf-2.6.32-131.35.1.el6.i686.rpm
    perf-debuginfo-2.6.32-131.35.1.el6.i686.rpm
    
    noarch:
    kernel-doc-2.6.32-131.35.1.el6.noarch.rpm
    kernel-firmware-2.6.32-131.35.1.el6.noarch.rpm
    
    ppc64:
    kernel-2.6.32-131.35.1.el6.ppc64.rpm
    kernel-bootwrapper-2.6.32-131.35.1.el6.ppc64.rpm
    kernel-debug-2.6.32-131.35.1.el6.ppc64.rpm
    kernel-debug-debuginfo-2.6.32-131.35.1.el6.ppc64.rpm
    kernel-debug-devel-2.6.32-131.35.1.el6.ppc64.rpm
    kernel-debuginfo-2.6.32-131.35.1.el6.ppc64.rpm
    kernel-debuginfo-common-ppc64-2.6.32-131.35.1.el6.ppc64.rpm
    kernel-devel-2.6.32-131.35.1.el6.ppc64.rpm
    kernel-headers-2.6.32-131.35.1.el6.ppc64.rpm
    perf-2.6.32-131.35.1.el6.ppc64.rpm
    perf-debuginfo-2.6.32-131.35.1.el6.ppc64.rpm
    
    s390x:
    kernel-2.6.32-131.35.1.el6.s390x.rpm
    kernel-debug-2.6.32-131.35.1.el6.s390x.rpm
    kernel-debug-debuginfo-2.6.32-131.35.1.el6.s390x.rpm
    kernel-debug-devel-2.6.32-131.35.1.el6.s390x.rpm
    kernel-debuginfo-2.6.32-131.35.1.el6.s390x.rpm
    kernel-debuginfo-common-s390x-2.6.32-131.35.1.el6.s390x.rpm
    kernel-devel-2.6.32-131.35.1.el6.s390x.rpm
    kernel-headers-2.6.32-131.35.1.el6.s390x.rpm
    kernel-kdump-2.6.32-131.35.1.el6.s390x.rpm
    kernel-kdump-debuginfo-2.6.32-131.35.1.el6.s390x.rpm
    kernel-kdump-devel-2.6.32-131.35.1.el6.s390x.rpm
    perf-2.6.32-131.35.1.el6.s390x.rpm
    perf-debuginfo-2.6.32-131.35.1.el6.s390x.rpm
    
    x86_64:
    kernel-2.6.32-131.35.1.el6.x86_64.rpm
    kernel-debug-2.6.32-131.35.1.el6.x86_64.rpm
    kernel-debug-debuginfo-2.6.32-131.35.1.el6.x86_64.rpm
    kernel-debug-devel-2.6.32-131.35.1.el6.x86_64.rpm
    kernel-debuginfo-2.6.32-131.35.1.el6.x86_64.rpm
    kernel-debuginfo-common-x86_64-2.6.32-131.35.1.el6.x86_64.rpm
    kernel-devel-2.6.32-131.35.1.el6.x86_64.rpm
    kernel-headers-2.6.32-131.35.1.el6.x86_64.rpm
    perf-2.6.32-131.35.1.el6.x86_64.rpm
    perf-debuginfo-2.6.32-131.35.1.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-2012-3412.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 2012 Red Hat, Inc.
    
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