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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

______________________________________________________________________________

                        SUSE Security Announcement

        Package:                kernel
        Announcement ID:        SUSE-SA:2011:004
        Date:                   Fri, 14 Jan 2011 13:00:00 +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:     local privilege escalation
        CVSS v2 Base Score:     7.8 (AV:N/AC:L/Au:N/C:N/I:N/A:C)
        SUSE Default Package:   yes
        Cross-References:       CVE-2010-3437, CVE-2010-3861, CVE-2010-3874
                                CVE-2010-3881, CVE-2010-4072, CVE-2010-4073
                                CVE-2010-4082, CVE-2010-4083, CVE-2010-4157
                                CVE-2010-4158, CVE-2010-4160, CVE-2010-4162
                                CVE-2010-4163, CVE-2010-4164, CVE-2010-4165
                                CVE-2010-4169, CVE-2010-4175, CVE-2010-4258

    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

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

   Following security issues were fixed:
   CVE-2010-4258: A local attacker could use a Oops (kernel crash) caused
   by other flaws to write a 0 byte to a attacker controlled address
   in the kernel. This could lead to privilege escalation together with
   other issues.

   CVE-2010-4160: An overflow in sendto() and recvfrom() routines was
   fixed that could be used by local attackers to potentially crash the
   kernel using some socket families like L2TP.

   CVE-2010-4157: A 32bit vs 64bit integer mismatch in gdth_ioctl_alloc
   could lead to memory corruption in the GDTH driver.

   CVE-2010-4165: The do_tcp_setsockopt function in net/ipv4/tcp.c
   in the Linux kernel did not properly restrict TCP_MAXSEG (aka MSS)
   values, which allowed local users to cause a denial of service (OOPS)
   via a setsockopt call that specifies a small value, leading to a
   divide-by-zero error or incorrect use of a signed integer.

   CVE-2010-4164: A remote (or local) attacker communicating over X.25
   could cause a kernel panic by attempting to negotiate malformed
   facilities.

   CVE-2010-4175: A local attacker could cause memory overruns in the
   RDS protocol stack, potentially crashing the kernel. So far it is
   considered not to be exploitable.

   CVE-2010-4169: Use-after-free vulnerability in mm/mprotect.c in the
   Linux kernel allowed local users to cause a denial of service via
   vectors involving an mprotect system call.

   CVE-2010-3874: A minor heap overflow in the CAN network module
   was fixed.  Due to nature of the memory allocator it is likely not
   exploitable.

   CVE-2010-4158: A memory information leak in Berkeley packet filter
   rules allowed local attackers to read uninitialized memory of the
   kernel stack.

   CVE-2010-4162: A local denial of service in the blockdevice layer
   was fixed.

   CVE-2010-4163: By submitting certain I/O requests with 0 length,
   a local user could have caused a kernel panic.

   CVE-2010-3861: The ethtool_get_rxnfc function in net/core/ethtool.c
   in the Linux kernel did not initialize a certain block of heap memory,
   which allowed local users to obtain potentially sensitive information
   via an ETHTOOL_GRXCLSRLALL ethtool command with a large info.rule_cnt
   value.

   CVE-2010-3881: arch/x86/kvm/x86.c in the Linux kernel did not
   initialize certain structure members, which allowed local users to
   obtain potentially sensitive information from kernel stack memory
   via read operations on the /dev/kvm device.

   CVE-2010-3437: A range checking overflow in pktcdvd ioctl was fixed.

   CVE-2010-4082: The viafb_ioctl_get_viafb_info function in
   drivers/video/via/ioctl.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 VIAFB_GET_INFO ioctl call.

   CVE-2010-4073: The ipc subsystem in the Linux kernel did not
   initialize certain structures, which allowed local users to obtain
   potentially sensitive information from kernel stack memory via
   vectors related to the (1) compat_sys_semctl, (2) compat_sys_msgctl,
   and (3) compat_sys_shmctl functions in ipc/compat.c; and the (4)
   compat_sys_mq_open and (5) compat_sys_mq_getsetattr functions in
   ipc/compat_mq.c.

   CVE-2010-4072: The copy_shmid_to_user function in ipc/shm.c in the
   Linux kernel did not initialize a certain structure, which allowed
   local users to obtain potentially sensitive information from kernel
   stack memory via vectors related to the shmctl system call and the
   "old shm interface."

   CVE-2010-4083: The copy_semid_to_user function in ipc/sem.c in the
   Linux kernel did not initialize a certain structure, which allowed
   local users to obtain potentially sensitive information from kernel
   stack memory via a (1) IPC_INFO, (2) SEM_INFO, (3) IPC_STAT, or (4)
   SEM_STAT command in a semctl system call.

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:

   SLE 11 SERVER Unsupported Extras
     http://download.novell.com/patch/finder/?keywords=a5b88975f26bf20b19b4cb348f8532c3
     http://download.novell.com/patch/finder/?keywords=6b7fd41bd7226b53d8a5478d21d761ea
     http://download.novell.com/patch/finder/?keywords=bcb4e168cb163343275c4d62f9c9de15
     http://download.novell.com/patch/finder/?keywords=927b9000702886355ba37c627792d5cb
     http://download.novell.com/patch/finder/?keywords=356fcef510f901c1aa5982e309fb1b70

   SUSE Linux Enterprise Server 11 SP1
     http://download.novell.com/patch/finder/?keywords=23f8d08c0e40d5d87542968bb0041a81
     http://download.novell.com/patch/finder/?keywords=aa169ef3e3233aaf1120bd771f0897dc
     http://download.novell.com/patch/finder/?keywords=84fa31032843bdcdb6803fdf5c8916e2
     http://download.novell.com/patch/finder/?keywords=965b02d89397493aaac6b5e6aa40db68
     http://download.novell.com/patch/finder/?keywords=1e884403c52fc77802015c35ce13fbc4

   SUSE Linux Enterprise Desktop 11 SP1
     http://download.novell.com/patch/finder/?keywords=23f8d08c0e40d5d87542968bb0041a81
     http://download.novell.com/patch/finder/?keywords=1e884403c52fc77802015c35ce13fbc4

   SUSE Linux Enterprise High Availability Extension 11 SP1
     http://download.novell.com/patch/finder/?keywords=23f8d08c0e40d5d87542968bb0041a81
     http://download.novell.com/patch/finder/?keywords=aa169ef3e3233aaf1120bd771f0897dc
     http://download.novell.com/patch/finder/?keywords=84fa31032843bdcdb6803fdf5c8916e2
     http://download.novell.com/patch/finder/?keywords=965b02d89397493aaac6b5e6aa40db68
     http://download.novell.com/patch/finder/?keywords=1e884403c52fc77802015c35ce13fbc4

______________________________________________________________________________

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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=1f0P
-----END PGP SIGNATURE-----

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