Red Hat: 2010:0670-01: kernel: Important Advisory

    Date02 Sep 2010
    CategoryRed Hat
    2205
    Posted ByJoe Shakespeare
    Updated kernel packages that fix two security issues and three bugs are now available for Red Hat Enterprise Linux 5.4 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-2010:0670-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://rhn.redhat.com/errata/RHSA-2010-0670.html
    Issue date:        2010-09-02
    CVE Names:         CVE-2010-2240 CVE-2010-2798 
    =====================================================================
    
    1. Summary:
    
    Updated kernel packages that fix two security issues and three bugs are now
    available for Red Hat Enterprise Linux 5.4 Extended Update Support.
    
    The Red Hat Security Response Team has rated this update as having
    important security impact. Common Vulnerability Scoring System (CVSS) base
    scores, which give detailed severity ratings, are available for each
    vulnerability from the CVE links in the References section.
    
    2. Relevant releases/architectures:
    
    Red Hat Enterprise Linux (v. 5.4.z server) - i386, ia64, noarch, ppc, 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 issues:
    
    * When an application has a stack overflow, the stack could silently
    overwrite another memory mapped area instead of a segmentation fault
    occurring, which could cause an application to execute arbitrary code,
    possibly leading to privilege escalation. It is known that the X Window
    System server can be used to trigger this flaw. (CVE-2010-2240, Important)
    
    * A miscalculation of the size of the free space of the initial directory
    entry in a directory leaf block was found in the Linux kernel Global File
    System 2 (GFS2) implementation. A local, unprivileged user with write
    access to a GFS2-mounted file system could perform a rename operation on
    that file system to trigger a NULL pointer dereference, possibly resulting
    in a denial of service or privilege escalation. (CVE-2010-2798, Important)
    
    Red Hat would like to thank the X.Org security team for reporting
    CVE-2010-2240, with upstream acknowledging Rafal Wojtczuk as the original
    reporter; and Grant Diffey of CenITex for reporting CVE-2010-2798.
    
    This update also fixes the following bugs:
    
    * Problems receiving network traffic correctly via a non-standard layer 3
    protocol when using the ixgbe driver. This update corrects this issue.
    (BZ#618275)
    
    * A bug was found in the way the megaraid_sas driver (for SAS based RAID
    controllers) handled physical disks and management IOCTLs. All physical
    disks were exported to the disk layer, allowing an oops in
    megasas_complete_cmd_dpc() when completing the IOCTL command if a timeout
    occurred. One possible trigger for this bug was running "mkfs". This update
    resolves this issue by updating the megaraid_sas driver to version 4.31.
    (BZ#619363)
    
    * Previously, Message Signaled Interrupts (MSI) resulted in PCI bus writes
    to mask and unmask the MSI IRQ for a PCI device. These unnecessary PCI bus
    writes resulted in the serialization of MSIs, leading to poor performance
    on systems with high MSI load. This update adds a new kernel boot
    parameter, msi_nolock, which forgoes the PCI bus writes and allows for
    better simultaneous processing of MSIs. (BZ#621939)
    
    Users should 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
    http://kbase.redhat.com/faq/docs/DOC-11259
    
    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/):
    
    606611 - CVE-2010-2240 kernel: mm: keep a guard page below a grow-down stack segment
    618275 - Received data corrupts when non standards L3 protocols are used on ixgbe [rhel-5.4.z]
    619363 - [LSI 5.6 feat] update megaraid_sas to version 4.31 [rhel-5.4.z]
    620300 - CVE-2010-2798 kernel: gfs2: rename causes kernel panic
    621939 - Significant MSI performance issue due to redundant interrupt masking [rhel-5.4.z]
    
    6. Package List:
    
    Red Hat Enterprise Linux (v. 5.4.z server):
    
    Source:
    kernel-2.6.18-164.25.1.el5.src.rpm
    
    i386:
    kernel-2.6.18-164.25.1.el5.i686.rpm
    kernel-PAE-2.6.18-164.25.1.el5.i686.rpm
    kernel-PAE-debuginfo-2.6.18-164.25.1.el5.i686.rpm
    kernel-PAE-devel-2.6.18-164.25.1.el5.i686.rpm
    kernel-debug-2.6.18-164.25.1.el5.i686.rpm
    kernel-debug-debuginfo-2.6.18-164.25.1.el5.i686.rpm
    kernel-debug-devel-2.6.18-164.25.1.el5.i686.rpm
    kernel-debuginfo-2.6.18-164.25.1.el5.i686.rpm
    kernel-debuginfo-common-2.6.18-164.25.1.el5.i686.rpm
    kernel-devel-2.6.18-164.25.1.el5.i686.rpm
    kernel-headers-2.6.18-164.25.1.el5.i386.rpm
    kernel-xen-2.6.18-164.25.1.el5.i686.rpm
    kernel-xen-debuginfo-2.6.18-164.25.1.el5.i686.rpm
    kernel-xen-devel-2.6.18-164.25.1.el5.i686.rpm
    
    ia64:
    kernel-2.6.18-164.25.1.el5.ia64.rpm
    kernel-debug-2.6.18-164.25.1.el5.ia64.rpm
    kernel-debug-debuginfo-2.6.18-164.25.1.el5.ia64.rpm
    kernel-debug-devel-2.6.18-164.25.1.el5.ia64.rpm
    kernel-debuginfo-2.6.18-164.25.1.el5.ia64.rpm
    kernel-debuginfo-common-2.6.18-164.25.1.el5.ia64.rpm
    kernel-devel-2.6.18-164.25.1.el5.ia64.rpm
    kernel-headers-2.6.18-164.25.1.el5.ia64.rpm
    kernel-xen-2.6.18-164.25.1.el5.ia64.rpm
    kernel-xen-debuginfo-2.6.18-164.25.1.el5.ia64.rpm
    kernel-xen-devel-2.6.18-164.25.1.el5.ia64.rpm
    
    noarch:
    kernel-doc-2.6.18-164.25.1.el5.noarch.rpm
    
    ppc:
    kernel-2.6.18-164.25.1.el5.ppc64.rpm
    kernel-debug-2.6.18-164.25.1.el5.ppc64.rpm
    kernel-debug-debuginfo-2.6.18-164.25.1.el5.ppc64.rpm
    kernel-debug-devel-2.6.18-164.25.1.el5.ppc64.rpm
    kernel-debuginfo-2.6.18-164.25.1.el5.ppc64.rpm
    kernel-debuginfo-common-2.6.18-164.25.1.el5.ppc64.rpm
    kernel-devel-2.6.18-164.25.1.el5.ppc64.rpm
    kernel-headers-2.6.18-164.25.1.el5.ppc.rpm
    kernel-headers-2.6.18-164.25.1.el5.ppc64.rpm
    kernel-kdump-2.6.18-164.25.1.el5.ppc64.rpm
    kernel-kdump-debuginfo-2.6.18-164.25.1.el5.ppc64.rpm
    kernel-kdump-devel-2.6.18-164.25.1.el5.ppc64.rpm
    
    s390x:
    kernel-2.6.18-164.25.1.el5.s390x.rpm
    kernel-debug-2.6.18-164.25.1.el5.s390x.rpm
    kernel-debug-debuginfo-2.6.18-164.25.1.el5.s390x.rpm
    kernel-debug-devel-2.6.18-164.25.1.el5.s390x.rpm
    kernel-debuginfo-2.6.18-164.25.1.el5.s390x.rpm
    kernel-debuginfo-common-2.6.18-164.25.1.el5.s390x.rpm
    kernel-devel-2.6.18-164.25.1.el5.s390x.rpm
    kernel-headers-2.6.18-164.25.1.el5.s390x.rpm
    kernel-kdump-2.6.18-164.25.1.el5.s390x.rpm
    kernel-kdump-debuginfo-2.6.18-164.25.1.el5.s390x.rpm
    kernel-kdump-devel-2.6.18-164.25.1.el5.s390x.rpm
    
    x86_64:
    kernel-2.6.18-164.25.1.el5.x86_64.rpm
    kernel-debug-2.6.18-164.25.1.el5.x86_64.rpm
    kernel-debug-debuginfo-2.6.18-164.25.1.el5.x86_64.rpm
    kernel-debug-devel-2.6.18-164.25.1.el5.x86_64.rpm
    kernel-debuginfo-2.6.18-164.25.1.el5.x86_64.rpm
    kernel-debuginfo-common-2.6.18-164.25.1.el5.x86_64.rpm
    kernel-devel-2.6.18-164.25.1.el5.x86_64.rpm
    kernel-headers-2.6.18-164.25.1.el5.x86_64.rpm
    kernel-xen-2.6.18-164.25.1.el5.x86_64.rpm
    kernel-xen-debuginfo-2.6.18-164.25.1.el5.x86_64.rpm
    kernel-xen-devel-2.6.18-164.25.1.el5.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://www.redhat.com/security/team/key/#package
    
    7. References:
    
    https://www.redhat.com/security/data/cve/CVE-2010-2240.html
    https://www.redhat.com/security/data/cve/CVE-2010-2798.html
    http://www.redhat.com/security/updates/classification/#important
    
    8. Contact:
    
    The Red Hat security contact is .  More contact
    details at https://www.redhat.com/security/team/contact/
    
    Copyright 2010 Red Hat, Inc.
    
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