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SuSE: Linux kernel (SUSE-SA:2009:032) Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   

                        SUSE Security Announcement

        Package:                kernel
        Announcement ID:        SUSE-SA:2009:032
        Date:                   Tue, 09 Jun 2009 11:00:00 +0000
        Affected Products:      openSUSE 11.1
                                SLE 11 High Availability Extension
                                SLES 11 DEBUGINFO
                                SLED 11
                                SLES 11
        Vulnerability Type:     remote code execution
        Severity (1-10):        8
        SUSE Default Package:   yes
        Cross-References:       CVE-2009-1192, CVE-2009-1242, CVE-2009-1265
                                CVE-2009-1337, CVE-2009-1360, CVE-2009-1439

    Content of This Advisory:
        1) Security Vulnerability Resolved:
             Linux kernel security problems
           Problem Description
        2) Solution or Work-Around
        3) Special Instructions and Notes
        4) Package Location and Checksums
        5) Pending Vulnerabilities, Solutions, and Work-Arounds:
            See SUSE Security Summary Report.
        6) Authenticity Verification and Additional Information


1) Problem Description and Brief Discussion

   This Linux kernel update for SUSE Linux Enterprise 11 and openSUSE
   11.1 fixes lots of bugs and some security issues. The kernel was also
   updated to the stable release.

   Following security issues have been fixed:
   CVE-2009-1439: Buffer overflow in fs/cifs/connect.c in CIFS in the
   Linux kernel 2.6.29 and earlier allows remote attackers to cause
   a denial of service (crash) or potential code execution via a long
   nativeFileSystem field in a Tree Connect response to an SMB mount

   This requires that kernel can be made to mount a "cifs" filesystem
   from a malicious CIFS server.

   CVE-2009-1337: The exit_notify function in kernel/exit.c in the Linux
   kernel did not restrict exit signals when the CAP_KILL capability
   is held, which allows local users to send an arbitrary signal to a
   process by running a program that modifies the exit_signal field and
   then uses an exec system call to launch a setuid application.

   The GCC option -fwrapv has been added to compilation to work around
   potentially removing integer overflow checks.

   CVE-2009-1265: Integer overflow in rose_sendmsg (sys/net/af_rose.c) in
   the Linux kernel might allow attackers to obtain sensitive information
   via a large length value, which causes "garbage" memory to be sent.

   CVE-2009-1242: The vmx_set_msr function in arch/x86/kvm/vmx.c in
   the VMX implementation in the KVM subsystem in the Linux kernel on
   the i386 platform allows guest OS users to cause a denial of service
   (OOPS) by setting the EFER_LME (aka "Long mode enable") bit in the
   Extended Feature Enable Register (EFER) model-specific register,
   which is specific to the x86_64 platform.

   CVE-2009-1360: The __inet6_check_established function
   in net/ipv6/inet6_hashtables.c in the Linux kernel, when Network
   Namespace Support (aka NET_NS) is enabled, allows remote attackers to
   cause a denial of service (NULL pointer dereference and system crash)
   via vectors involving IPv6 packets.

   CVE-2009-1192: drivers/char/agp/generic.c in the agp subsystem in the
   Linux kernel does not zero out pages that may later be available to
   a user-space process, which allows local users to obtain sensitive
   information by reading these pages.

   Additionally a lot of bugs have been fixed and are listed in the
   RPM changelog.

2) Solution or Work-Around

   There is no known workaround, please install the update packages.

3) Special Instructions and Notes

   Please reboot the machine after installing the update.

4) Package Location and Checksums

   The preferred method for installing security updates is to use the YaST
   Online Update (YOU) tool. YOU detects which updates are required and
   automatically performs the necessary steps to verify and install them.
   Alternatively, download the update packages for your distribution manually
   and verify their integrity by the methods listed in Section 6 of this
   announcement. Then install the packages using the command

     rpm -Fhv 

   to apply the update, replacing  with the filename of the
   downloaded RPM package.

   x86 Platform:

   openSUSE 11.1:

   Platform Independent:

   openSUSE 11.1:

   Power PC Platform:

   openSUSE 11.1:

   x86-64 Platform:

   openSUSE 11.1:


   openSUSE 11.1:

   Our maintenance customers are notified individually. The packages are
   offered for installation from the maintenance web:

   SLE 11 SERVER Unsupported Extras

   SLES 11

   SLED 11

   SLE 11 High Availability Extension



5) Pending Vulnerabilities, Solutions, and Work-Arounds:

   See SUSE Security Summary Report.

6) Authenticity Verification and Additional Information

  - Announcement authenticity verification:

    SUSE security announcements are published via mailing lists and on Web
    sites. The authenticity and integrity of a SUSE security announcement is
    guaranteed by a cryptographic signature in each announcement. All SUSE
    security announcements are published with a valid signature.

    To verify the signature of the announcement, save it as text into a file
    and run the command

      gpg --verify 

    replacing  with the name of the file where you saved the
    announcement. The output for a valid signature looks like:

      gpg: Signature made  using RSA key ID 3D25D3D9
      gpg: Good signature from "SuSE Security Team "

    where  is replaced by the date the document was signed.

    If the security team's key is not contained in your key ring, you can
    import it from the first installation CD. To import the key, use the

      gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc

  - Package authenticity verification:

    SUSE update packages are available on many mirror FTP servers all over the
    world. While this service is considered valuable and important to the free
    and open source software community, the authenticity and the integrity of
    a package needs to be verified to ensure that it has not been tampered

    The internal rpm package signatures provide an easy way to verify the
    authenticity of an RPM package. Use the command

     rpm -v --checksig 

    to verify the signature of the package, replacing  with the
    filename of the RPM package downloaded. The package is unmodified if it
    contains a valid signature from with the key ID 9C800ACA.

    This key is automatically imported into the RPM database (on
    RPMv4-based distributions) and the gpg key ring of 'root' during
    installation. You can also find it on the first installation CD and at
    the end of this announcement.

  - SUSE runs two security mailing lists to which any interested party may
        -   General Linux and SUSE security discussion.
            All SUSE security announcements are sent to this list.
            To subscribe, send an e-mail to
        -   SUSE's announce-only mailing list.
            Only SUSE's security announcements are sent to this list.
            To subscribe, send an e-mail to

    SUSE's security contact is  or .
    The  public key is listed below.

    The information in this advisory may be distributed or reproduced,
    provided that the advisory is not modified in any way. In particular, the
    clear text signature should show proof of the authenticity of the text.

    SUSE Linux Products GmbH provides no warranties of any kind whatsoever
    with respect to the information contained in this security advisory.
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