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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2011.0271
        SUSE Security Announcement: Linux kernel (SUSE-SA:2011:012)
                               9 March 2011

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:          kernel
Publisher:        SUSE
Operating System: SUSE
Impact/Access:    Denial of Service         -- Remote/Unauthenticated
                  Root Compromise           -- Existing Account      
                  Access Privileged Data    -- Existing Account      
                  Overwrite Arbitrary Files -- Existing Account      
                  Access Confidential Data  -- Existing Account      
Resolution:       Patch/Upgrade
CVE Names:        CVE-2011-0712 CVE-2011-0711 CVE-2011-0710
                  CVE-2011-0006 CVE-2010-4668 CVE-2010-4650
                  CVE-2010-4529 CVE-2010-4527 CVE-2010-4526
                  CVE-2010-4346 CVE-2010-4342 CVE-2010-4243
                  CVE-2010-4163 CVE-2010-4077 CVE-2010-4076
                  CVE-2010-4075 CVE-2010-3877 CVE-2010-3876
                  CVE-2010-3875 CVE-2010-3858 CVE-2010-3705
                  CVE-2010-3699 CVE-2010-2943 

Reference:        ESB-2011.0166
                  ESB-2011.0102
                  ESB-2011.0085
                  ESB-2011.0053
                  ESB-2010.1108
                  ESB-2010.1075
                  ESB-2010.0877

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______________________________________________________________________________

                        SUSE Security Announcement

        Package:                kernel
        Announcement ID:        SUSE-SA:2011:012
        Date:                   Tue, 08 Mar 2011 15:00:00 +0000
        Affected Products:      SUSE Linux Enterprise High Availability Extension 11 SP1
                                SUSE Linux Enterprise Desktop 11 SP1
                                SUSE Linux Enterprise Server 11 SP1
        Vulnerability Type:     remote denial of service, local privilege escalation
        CVSS v2 Base Score:     8.3 (AV:A/AC:L/Au:N/C:C/I:C/A:C)
        SUSE Default Package:   yes
        Cross-References:       CVE-2010-2943, CVE-2010-3699, CVE-2010-3705
                                CVE-2010-3858, CVE-2010-3875, CVE-2010-3876
                                CVE-2010-3877, CVE-2010-4075, CVE-2010-4076
                                CVE-2010-4077, CVE-2010-4163, CVE-2010-4243
                                CVE-2010-4342, CVE-2010-4346, CVE-2010-4526
                                CVE-2010-4527, CVE-2010-4529, CVE-2010-4650
                                CVE-2010-4668, CVE-2011-0006, CVE-2011-0710
                                CVE-2011-0711, CVE-2011-0712

    Content of This Advisory:
        1) Security Vulnerability Resolved:
             Linux kernel security update
           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

   The SUSE Linux Enterprise 11 Service Pack 1 kernel was updated to
   2.6.32.29 and fixes various bugs and security issues.

   CVE-2010-3875: The ax25_getname function in net/ax25/af_ax25.c in the
   Linux kernel did not initialize a certain structure, which allowed
   local users to obtain potentially sensitive information from kernel
   stack memory by reading a copy of this structure.

   CVE-2010-3876: net/packet/af_packet.c in the Linux kernel did not
   properly initialize certain structure members, which allowed local
   users to obtain potentially sensitive information from kernel stack
   memory by leveraging the CAP_NET_RAW capability to read copies of
   the applicable structures.

   CVE-2010-3877: The get_name function in net/tipc/socket.c in the
   Linux kernel did not initialize a certain structure, which allowed
   local users to obtain potentially sensitive information from kernel
   stack memory by reading a copy of this structure.

   CVE-2010-3705: The sctp_auth_asoc_get_hmac function in net/sctp/auth.c
   in the Linux kernel did not properly validate the hmac_ids array of an
   SCTP peer, which allowed remote attackers to cause a denial of service
   (memory corruption and panic) via a crafted value in the last element
   of this array.

   CVE-2011-0711: A stack memory information leak in the xfs FSGEOMETRY_V1
   ioctl was fixed.

   CVE-2011-0712: Multiple buffer overflows in the caiaq Native
   Instruments USB audio functionality in the Linux kernel might have
   allowed attackers to cause a denial of service or possibly have
   unspecified other impact via a long USB device name, related to (1)
   the snd_usb_caiaq_audio_init function in sound/usb/caiaq/audio.c and
   (2) the snd_usb_caiaq_midi_init function in sound/usb/caiaq/midi.c.

   CVE-2011-0710: The task_show_regs function in arch/s390/kernel/traps.c
   in the Linux kernel on the s390 platform allowed local users to obtain
   the values of the registers of an arbitrary process by reading a
   status file under /proc/.

   CVE-2010-2943: The xfs implementation in the Linux kernel did not
   look up inode allocation btrees before reading inode buffers, which
   allowed remote authenticated users to read unlinked files, or read
   or overwrite disk blocks that are currently assigned to an active
   file but were previously assigned to an unlinked file, by accessing
   a stale NFS file handle.

   CVE-2010-4075: The uart_get_count function in
   drivers/serial/serial_core.c in the Linux kernel did not properly
   initialize a certain structure member, which allowed local users to
   obtain potentially sensitive information from kernel stack memory
   via a TIOCGICOUNT ioctl call.

   CVE-2010-4076: The rs_ioctl function in drivers/char/amiserial.c in the
   Linux kernel did not properly initialize a certain structure member,
   which allowed local users to obtain potentially sensitive information
   from kernel stack memory via a TIOCGICOUNT ioctl call.

   CVE-2010-4077: The ntty_ioctl_tiocgicount function in
   drivers/char/nozomi.c in the Linux kernel did not properly initialize
   a certain structure member, which allowed local users to obtain
   potentially sensitive information from kernel stack memory via a
   TIOCGICOUNT ioctl call.

   CVE-2010-4243: fs/exec.c in the Linux kernel did not enable the OOM
   Killer to assess use of stack memory by arrays representing the (1)
   arguments and (2) environment, which allows local users to cause a
   denial of service (memory consumption) via a crafted exec system call,
   aka an OOM dodging issue, a related issue to CVE-2010-3858.

   CVE-2010-4668: The blk_rq_map_user_iov function in block/blk-map.c
   in the Linux kernel allowed local users to cause a denial of service
   (panic) via a zero-length I/O request in a device ioctl to a SCSI
   device, related to an unaligned map. NOTE: this vulnerability exists
   because of an incomplete fix for CVE-2010-4163.

   CVE-2010-4529: Integer underflow in the irda_getsockopt function in
   net/irda/af_irda.c in the Linux kernel on platforms other than x86
   allowed local users to obtain potentially sensitive information from
   kernel heap memory via an IRLMP_ENUMDEVICES getsockopt call.

   CVE-2010-4342: The aun_incoming function in net/econet/af_econet.c
   in the Linux kernel, when Econet is enabled, allows remote attackers
   to cause a denial of service (NULL pointer dereference and OOPS)
   by sending an Acorn Universal Networking (AUN) packet over UDP.

   CVE-2010-3699: The backend driver in Xen 3.x allowed guest OS users
   to cause a denial of service via a kernel thread leak, which prevented
   the device and guest OS from being shut down or create a zombie domain,
   causing a hang in zenwatch, or preventing unspecified xm commands from
   working properly, related to (1) netback, (2) blkback, or (3) blktap.

   CVE-2010-4346: The install_special_mapping function in mm/mmap.c in the
   Linux kernel did not make an expected security_file_mmap function call,
   which allows local users to bypass intended mmap_min_addr restrictions
   and possibly conduct NULL pointer dereference attacks via a crafted
   assembly-language application.

   CVE-2010-4650: Fixed a verify_ioctl overflow in "cuse" in the fuse
   filesystem.  The code should only be called by root users though.

   CVE-2010-4526: Race condition in the sctp_icmp_proto_unreachable
   function in net/sctp/input.c in the Linux kernel allowed remote
   attackers to cause a denial of service (panic) via an ICMP unreachable
   message to a socket that is already locked by a user, which causes
   the socket to be freed and triggers list corruption, related to the
   sctp_wait_for_connect function.

   CVE-2010-4527: The load_mixer_volumes function in sound/oss/soundcard.c
   in the OSS sound subsystem in the Linux kernel incorrectly expected
   that a certain name field ends with a '0' character, which allowed
   local users to conduct buffer overflow attacks and gain privileges,
   or possibly obtain sensitive information from kernel memory, via a
   SOUND_MIXER_SETLEVELS ioctl call.

   CVE-2011-0006: Fixed a LSM bug in IMA (Integrity Measuring Architecture).
   IMA is not enabled in SUSE kernels, so we were not affected.

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" module or the "zypper" commandline tool. The package and
   patch management stack will detect which updates are required and
   automatically perform 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 <file.rpm>

   to apply the update, replacing <file.rpm> with the filename of the
   downloaded RPM package.

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

   SUSE Linux Enterprise Server 11 SP1
     http://download.novell.com/patch/finder/?keywords=b296065a76246d5eb3b84a54249a6ab9
     http://download.novell.com/patch/finder/?keywords=37a20332a3477c6790648da1bb44afd0
     http://download.novell.com/patch/finder/?keywords=40fa968a3fed1c5ae479db978466dc9b
     http://download.novell.com/patch/finder/?keywords=a980dec7ad0f6081c9c24832e0e59c6f
     http://download.novell.com/patch/finder/?keywords=abeba8d6c807360502c7dfc6ca6f2b4d

   SUSE Linux Enterprise Desktop 11 SP1
     http://download.novell.com/patch/finder/?keywords=b296065a76246d5eb3b84a54249a6ab9
     http://download.novell.com/patch/finder/?keywords=abeba8d6c807360502c7dfc6ca6f2b4d

   SUSE Linux Enterprise High Availability Extension 11 SP1
     http://download.novell.com/patch/finder/?keywords=b296065a76246d5eb3b84a54249a6ab9
     http://download.novell.com/patch/finder/?keywords=37a20332a3477c6790648da1bb44afd0
     http://download.novell.com/patch/finder/?keywords=40fa968a3fed1c5ae479db978466dc9b
     http://download.novell.com/patch/finder/?keywords=a980dec7ad0f6081c9c24832e0e59c6f
     http://download.novell.com/patch/finder/?keywords=abeba8d6c807360502c7dfc6ca6f2b4d

______________________________________________________________________________

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 <file>

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

      gpg: Signature made <DATE> using RSA key ID 3D25D3D9
      gpg: Good signature from "SuSE Security Team <security@suse.de>"

    where <DATE> 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
    command

      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
    with.

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

     rpm -v --checksig <file.rpm>

    to verify the signature of the package, replacing <file.rpm> with the
    filename of the RPM package downloaded. The package is unmodified if it
    contains a valid signature from build@suse.de 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
    subscribe:

    opensuse-security@opensuse.org
        -   General Linux and SUSE security discussion.
            All SUSE security announcements are sent to this list.
            To subscribe, send an e-mail to
                <opensuse-security+subscribe@opensuse.org>.

    opensuse-security-announce@opensuse.org
        -   SUSE's announce-only mailing list.
            Only SUSE's security announcements are sent to this list.
            To subscribe, send an e-mail to
                <opensuse-security-announce+subscribe@opensuse.org>.

    =====================================================================
    SUSE's security contact is <security@suse.com> or <security@suse.de>.
    The <security@suse.de> 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.

Type Bits/KeyID     Date       User ID
pub  2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@suse.de>
pub  1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de>

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Comment: http://www.auscert.org.au/render.html?it=1967

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