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                        SUSE Security Announcement

        Package:                kernel
        Announcement ID:        SUSE-SA:2011:008
        Date:                   Fri, 11 Feb 2011 12:00:00 +0000
        Affected Products:      SUSE SLES 9
                                Open Enterprise Server
                                Novell Linux POS 9
        Vulnerability Type:     local privilege escalation, remote denial of service
        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-2010-2946, CVE-2010-3067, CVE-2010-3310
                                CVE-2010-3442, CVE-2010-3848, CVE-2010-3849
                                CVE-2010-3850, CVE-2010-3873, CVE-2010-4072
                                CVE-2010-4073, CVE-2010-4081, CVE-2010-4083
                                CVE-2010-4157, CVE-2010-4158, CVE-2010-4160
                                CVE-2010-4164, CVE-2010-4242, CVE-2010-4258
                                CVE-2010-4342, CVE-2010-4527, CVE-2010-4529

    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 patch updates the SUSE Linux Enterprise Server 9 kernel to fix
   various security issues and some bugs.

   Following security issues were fixed:
   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-2010-4527: 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-2010-4529: 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-2010-2946: fs/jfs/xattr.c in the Linux kernel did not properly
   handle a certain legacy format for storage of extended attributes,
   which might have allowed local users by bypass intended xattr namespace
   restrictions via an "os2." substring at the beginning of a name.

   CVE-2010-3848: Stack-based buffer overflow in the econet_sendmsg
   function in net/econet/af_econet.c in the Linux kernel, when an
   econet address is configured, allowed local users to gain privileges
   by providing a large number of iovec structures.

   CVE-2010-3849: The econet_sendmsg function in net/econet/af_econet.c
   in the Linux kernel, when an econet address is configured, allowed
   local users to cause a denial of service (NULL pointer dereference
   and OOPS) via a sendmsg call that specifies a NULL value for the
   remote address field.

   CVE-2010-3850: The ec_dev_ioctl function in net/econet/af_econet.c
   in the Linux kernel does not require the CAP_NET_ADMIN capability,
   which allowed local users to bypass intended access restrictions and
   configure econet addresses via an SIOCSIFADDR ioctl call.

   CVE-2010-4258: The do_exit function in kernel/exit.c in the Linux
   kernel did not properly handle a KERNEL_DS get_fs value, which
   allowed local users to bypass intended access_ok restrictions,
   overwrite arbitrary kernel memory locations, and gain privileges by
   leveraging a (1) BUG, (2) NULL pointer dereference, or (3) page fault,
   as demonstrated by vectors involving the clear_child_tid feature and
   the splice system call.

   CVE-2010-4160: Multiple integer overflows in the (1) pppol2tp_sendmsg
   function in net/l2tp/l2tp_ppp.c, and the (2) l2tp_ip_sendmsg function
   in net/l2tp/l2tp_ip.c, in the PPPoL2TP and IPoL2TP implementations
   in the Linux kernel allowed local users to cause a denial of service
   (heap memory corruption and panic) or possibly gain privileges via
   a crafted sendto call.

   CVE-2010-4157: Integer overflow in the ioc_general function in
   drivers/scsi/gdth.c in the Linux kernel on 64-bit platforms allowed local
   users to cause a denial of service (memory corruption) or possibly have
   unspecified other impact via a large argument in an ioctl call.

   CVE-2010-4164: Multiple integer underflows in the x25_parse_facilities
   function in net/x25/x25_facilities.c in the Linux kernel allowed remote
   attackers to cause a denial of service (system crash) via malformed
   X.25 (1) X25_FAC_CLASS_A, (2) X25_FAC_CLASS_B, (3) X25_FAC_CLASS_C,
   or (4) X25_FAC_CLASS_D facility data, a different vulnerability than
   CVE-2010-3873.

   CVE-2010-4158: The sk_run_filter function in net/core/filter.c in the
   Linux kernel did not check whether a certain memory location has been
   initialized before executing a (1) BPF_S_LD_MEM or (2) BPF_S_LDX_MEM
   instruction, which allowed local users to obtain potentially sensitive
   information from kernel stack memory via a crafted socket filter.

   CVE-2010-3442: Multiple integer overflows in the snd_ctl_new function
   in sound/core/control.c in the Linux kernel allowed local users to
   cause a denial of service (heap memory corruption) or possibly have
   unspecified other impact via a crafted (1) SNDRV_CTL_IOCTL_ELEM_ADD or
   (2) SNDRV_CTL_IOCTL_ELEM_REPLACE ioctl call.

   CVE-2010-4081: The snd_hdspm_hwdep_ioctl function in
   sound/pci/rme9652/hdspm.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 an
   SNDRV_HDSPM_IOCTL_GET_CONFIG_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.

   CVE-2010-3067: Integer overflow in the do_io_submit function in
   fs/aio.c in the Linux kernel allowed local users to cause a denial
   of service or possibly have unspecified other impact via crafted use
   of the io_submit system call.

   CVE-2010-3310: Multiple integer signedness errors in net/rose/af_rose.c
   in the Linux kernel allowed local users to cause a denial of service
   (heap memory corruption) or possibly have unspecified other impact
   via a rose_getname function call, related to the rose_bind and
   rose_connect functions.

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 

   to apply the update, replacing  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 CORE 9 for AMD64 and Intel EM64T
     http://download.novell.com/patch/finder/?keywords=7065a00fe307e86727b6c0854c97534d

   SUSE CORE 9 for IBM zSeries 64bit
     http://download.novell.com/patch/finder/?keywords=0c504394fbd3ce23ff9487901889cc49

   SUSE CORE 9 for IBM S/390 31bit
     http://download.novell.com/patch/finder/?keywords=b2a65cd0e6de1dca9b9b012cbd0c452f

   SUSE CORE 9 for IBM POWER
     http://download.novell.com/patch/finder/?keywords=578023f41ae49bb337d16ed1474c8ad4

   SUSE CORE 9 for Itanium Processor Family
     http://download.novell.com/patch/finder/?keywords=6d006dd073488d541d0a501ab1142715

   Novell Linux POS 9
     http://download.novell.com/patch/finder/?keywords=80a4ec55c123f8a2b2753c6904d9d935

   SUSE SLES 9
     http://download.novell.com/patch/finder/?keywords=7065a00fe307e86727b6c0854c97534d
     http://download.novell.com/patch/finder/?keywords=0c504394fbd3ce23ff9487901889cc49
     http://download.novell.com/patch/finder/?keywords=b2a65cd0e6de1dca9b9b012cbd0c452f
     http://download.novell.com/patch/finder/?keywords=578023f41ae49bb337d16ed1474c8ad4
     http://download.novell.com/patch/finder/?keywords=6d006dd073488d541d0a501ab1142715
     http://download.novell.com/patch/finder/?keywords=80a4ec55c123f8a2b2753c6904d9d935

   SUSE CORE 9 for x86
     http://download.novell.com/patch/finder/?keywords=80a4ec55c123f8a2b2753c6904d9d935

   Open Enterprise Server
     http://download.novell.com/patch/finder/?keywords=33f4cf79d393e579c86159767c5cd433

______________________________________________________________________________

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
    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 

    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 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-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
                .

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    The  public key is listed below.
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