Articles / SuSE: New kernel packages f…

SuSE: New kernel packages fix remote denial of service

This kernel update for the SUSE Linux Enterprise 10 SP3 kernel fixes several security issues and bugs. Multiple integer overflows in the snd_ctl_new function allow local users to cause a denial of service. An integer signedness error in the pkt_find_dev_from_minor function allows local users to obtain sensitive information from kernel memory. Uninitialized stack memory disclosure in the FBIOGET_VBLANK ioctl in the sis and ivtv drivers could leak kernel memory to userspace. An uninitialized stack memory disclosure in the rme9652 ALSA driver and the SystemV IPC handling functions could leak kernel memory to userspace. An integer overflow in the do_io_submit function allowed local users to cause a denial of service. Multiple integer signedness errors allowed local users to cause a denial of service. Updated packages are available from download.opensuse.org.

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______________________________________________________________________________

                       SUSE Security Announcement

       Package:                kernel
       Announcement ID:        SUSE-SA:2010:060
       Date:                   Tue, 14 Dec 2010 12:00:00 +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:     7.8 (AV:N/AC:L/Au:N/C:N/I:N/A:C)
       SUSE Default Package:   yes
       Cross-References:       CVE-2010-2226, CVE-2010-2248, CVE-2010-2942
                               CVE-2010-2946, CVE-2010-3067, CVE-2010-3086
                               CVE-2010-3310, CVE-2010-3437, CVE-2010-3442
                               CVE-2010-4072, CVE-2010-4073, CVE-2010-4078
                               CVE-2010-4080, CVE-2010-4081, CVE-2010-4083
                               CVE-2010-4157, CVE-2010-4158, CVE-2010-4162
                               CVE-2010-4164

   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-2010-3442: Multiple integer overflows in the snd_ctl_new
  function in sound/core/control.c in the Linux kernel before
  2.6.36-rc5-next-20100929 allow 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-2010-3437: Integer signedness error in the pkt_find_dev_from_minor
  function in drivers/block/pktcdvd.c in the Linux kernel before
  2.6.36-rc6 allows local users to obtain sensitive information from
  kernel memory or cause a denial of service (invalid pointer dereference
  and system crash) via a crafted index value in a PKT_CTRL_CMD_STATUS
  ioctl call.

  CVE-2010-4078: Uninitialized stack memory disclosure in the
  FBIOGET_VBLANK ioctl in the sis and ivtv drivers could leak kernel
  memory to userspace.

  CVE-2010-4080 / CVE-2010-4081: Uninitialized stack memory disclosure
  in the rme9652 ALSA driver could leak kernel memory to userspace.

  CVE-2010-4073 / CVE-2010-4072 / CVE-2010-4083: Uninitialized stack
  memory disclosure in the SystemV IPC handling functions could leak
  kernel memory to userspace.

  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.

  CVE-2010-2226: The xfs_swapext function in fs/xfs/xfs_dfrag.c in the
  Linux kernel did not properly check the file descriptors passed to
  the SWAPEXT ioctl, which allowed local users to leverage write access
  and obtain read access by swapping one file into another file.

  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-2010-2942: The actions implementation in the network queuing
  functionality in the Linux kernel did not properly initialize
  certain structure members when performing dump operations, which
  allowed local users to obtain potentially sensitive information
  from kernel memory via vectors related to (1) the tcf_gact_dump
  function in net/sched/act_gact.c, (2) the tcf_mirred_dump
  function in net/sched/act_mirred.c, (3) the tcf_nat_dump function
  in net/sched/act_nat.c, (4) the tcf_simp_dump function in
  net/sched/act_simple.c, and (5) the tcf_skbedit_dump function in
  net/sched/act_skbedit.c.

  CVE-2010-2248: fs/cifs/cifssmb.c in the CIFS implementation in the
  Linux kernel allowed remote attackers to cause a denial of service
  (panic) via an SMB response packet with an invalid CountHigh value,
  as demonstrated by a response from an OS/2 server, related to the
  CIFSSMBWrite and CIFSSMBWrite2 functions.

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

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

  CVE-2010-3086: A missing lock prefix in the x86 futex code could be
  used by local attackers to cause a denial of service.

  CVE-2010-4158: A memory information leak in Berkley 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.

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=674eb707cae3a31be66788e116641a9a

  SUSE Linux Enterprise Server 10 SP3
    http://download.novell.com/patch/finder/?keywords=674eb707cae3a31be66788e116641a9a
    http://download.novell.com/patch/finder/?keywords=8bc9a9f71e0364816351d414eb3c9832
    http://download.novell.com/patch/finder/?keywords=c12e832d9f0b5b30c9d4e408ab99b34d
    http://download.novell.com/patch/finder/?keywords=7a6102f48e04658e517624d16e7806bc
    http://download.novell.com/patch/finder/?keywords=2d433ce13217ec9e95c2b22bce28b8ed

  SLE SDK 10 SP3
    http://download.novell.com/patch/finder/?keywords=674eb707cae3a31be66788e116641a9a
    http://download.novell.com/patch/finder/?keywords=c12e832d9f0b5b30c9d4e408ab99b34d
    http://download.novell.com/patch/finder/?keywords=7a6102f48e04658e517624d16e7806bc
    http://download.novell.com/patch/finder/?keywords=2d433ce13217ec9e95c2b22bce28b8ed

  SUSE Linux Enterprise Desktop 10 SP3
    http://download.novell.com/patch/finder/?keywords=674eb707cae3a31be66788e116641a9a
    http://download.novell.com/patch/finder/?keywords=2d433ce13217ec9e95c2b22bce28b8ed

  SUSE Linux Enterprise Desktop 10 SP3 for x86
    http://download.novell.com/patch/finder/?keywords=2d433ce13217ec9e95c2b22bce28b8ed

______________________________________________________________________________

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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