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

                               ESB-2011.0340
        SUSE Security Announcement: Linux kernel (SUSE-SA:2011:015)
                               25 March 2011

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

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

Product:          kernel
Publisher:        SUSE
Operating System: SUSE
Impact/Access:    Denial of Service      -- Remote/Unauthenticated
                  Access Privileged Data -- Existing Account      
Resolution:       Patch/Upgrade
CVE Names:        CVE-2011-0711 CVE-2011-0710 CVE-2011-0521
                  CVE-2010-4668 CVE-2010-4655 CVE-2010-4529
                  CVE-2010-4527 CVE-2010-4526 CVE-2010-4342
                  CVE-2010-4248 CVE-2010-4242 CVE-2010-4163
                  CVE-2010-4077 CVE-2010-4076 CVE-2010-4075
                  CVE-2010-3877 CVE-2010-3876 CVE-2010-3875
                  CVE-2010-1173  

Reference:        ESB-2011.0166
                  ESB-2010.0470

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______________________________________________________________________________

                        SUSE Security Announcement

        Package:                kernel
        Announcement ID:        SUSE-SA:2011:015
        Date:                   Thu, 24 Mar 2011 16:00:00 +0000
        Affected Products:      SLE SDK 10 SP3
                                SUSE Linux Enterprise Desktop 10 SP3
                                SUSE Linux Enterprise Server 10 SP3
        Vulnerability Type:     remote denial of service
        CVSS v2 Base Score:     7.1 (AV:N/AC:M/Au:N/C:N/I:N/A:C)
        SUSE Default Package:   yes
        Cross-References:       CVE-2010-1173, CVE-2010-3875, CVE-2010-3876
                                CVE-2010-3877, CVE-2010-4075, CVE-2010-4076
                                CVE-2010-4077, CVE-2010-4163, CVE-2010-4242
                                CVE-2010-4248, CVE-2010-4342, CVE-2010-4526
                                CVE-2010-4527, CVE-2010-4529, CVE-2010-4655
                                CVE-2010-4668, CVE-2011-0521, CVE-2011-0710
                                CVE-2011-0711

    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

   This kernel update for the SUSE Linux Enterprise 10 SP3 kernel fixes several
   security issues and bugs.

   Following security issues were fixed:
   CVE-2010-4655: A memory leak in the ethtool ioctl was fixed that could
   disclose kernel memory to local attackers with CAP_NET_ADMIN privileges.

   CVE-2011-0521: The dvb_ca_ioctl function in
   drivers/media/dvb/ttpci/av7110_ca.c in the Linux kernel did not check
   the sign of a certain integer field, which allowed local users to cause
   a denial of service (memory corruption) or possibly have unspecified
   other impact via a negative value.

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

   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-2010-1173: The sctp_process_unk_param function in
   net/sctp/sm_make_chunk.c in the Linux kernel, when SCTP is enabled,
   allowed remote attackers to cause a denial of service (system crash)
   via an SCTPChunkInit packet containing multiple invalid parameters that
   require a large amount of error data.

   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-2010-4527: 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-2010-4248: Race condition in the __exit_signal function in
   kernel/exit.c in the Linux kernel allowed local users to cause a denial
   of service via vectors related to multi threaded exec, the use of a thread
   group leader in kernel/posix-cpu-timers.c, and the selection of a new
   thread group leader in the de_thread function in fs/exec.c.

   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-2010-4242: The hci_uart_tty_open function in the HCI UART driver
   (drivers/bluetooth/hci_ldisc.c) in the Linux kernel did not verify
   whether the tty has a write operation, which allowed local users to cause
   a denial of service (NULL pointer dereference) via vectors related to
   the Bluetooth driver.

   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, allowed remote attackers to
   cause a denial of service (NULL pointer dereference and OOPS) by sending
   an Acorn Universal Networking (AUN) packet over UDP.

   CVE-2010-4526: Race condition in the sctp_icmp_proto_unreachable function
   in net/sctp/input.c in 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.

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 Desktop 10 SP3 for AMD64 and Intel EM64T
     http://download.novell.com/patch/finder/?keywords=2119b714456dc8c3d29661b68c7bee51

   SUSE Linux Enterprise Server 10 SP3
     http://download.novell.com/patch/finder/?keywords=2119b714456dc8c3d29661b68c7bee51
     http://download.novell.com/patch/finder/?keywords=69931a7709e78d2b716e39859c3b56cb
     http://download.novell.com/patch/finder/?keywords=cd9fb179a893a617ec3d3b82d167c2e5
     http://download.novell.com/patch/finder/?keywords=cc92f236facf192053d5ac0bdb744a08
     http://download.novell.com/patch/finder/?keywords=4765b4a51c34eb13231f2a67011c8cfc

   SLE SDK 10 SP3
     http://download.novell.com/patch/finder/?keywords=2119b714456dc8c3d29661b68c7bee51
     http://download.novell.com/patch/finder/?keywords=cd9fb179a893a617ec3d3b82d167c2e5
     http://download.novell.com/patch/finder/?keywords=cc92f236facf192053d5ac0bdb744a08
     http://download.novell.com/patch/finder/?keywords=4765b4a51c34eb13231f2a67011c8cfc

   SUSE Linux Enterprise Desktop 10 SP3
     http://download.novell.com/patch/finder/?keywords=2119b714456dc8c3d29661b68c7bee51
     http://download.novell.com/patch/finder/?keywords=4765b4a51c34eb13231f2a67011c8cfc

   SUSE Linux Enterprise Desktop 10 SP3 for x86
     http://download.novell.com/patch/finder/?keywords=4765b4a51c34eb13231f2a67011c8cfc

______________________________________________________________________________

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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