SuSE: Linux kernel (SUSE-SA:2007:029)
Posted by Benjamin D. Thomas   
SuSE A NULL pointer dereference in the IPv6 sockopt handling could potentially be used by local attackers to read arbitrary kernel memory and thereby gain access to private information.

                        SUSE Security Announcement

        Package:                kernel
        Announcement ID:        SUSE-SA:2007:029
        Date:                   Thu, 03 May 2007 18:00:00 +0000
        Affected Products:      openSUSE 10.2
        Vulnerability Type:     remote denial of service
        Severity (1-10):        7
        SUSE Default Package:   yes
        Cross-References:       CVE-2007-1000, CVE-2007-1357, CVE-2007-1388

    Content of This Advisory:
        1) Security Vulnerability Resolved:
             kernel security update and bootloader fixes
           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 openSUSE 10.2 fixes the following security problems:

   - CVE-2007-1000 A NULL pointer dereference in the IPv6 sockopt handling
                   could potentially be used by local attackers to read
                   arbitrary kernel memory and thereby gain access to
                   private information.

   - CVE-2007-1388 A NULL pointer dereference could be used by local attackers
                   to cause a Oops / crash of the machine.

   - CVE-2007-1592 A possible double free in the IPv6/flowlabel handling was

   - CVE-2007-1357 A remote denial of service attack in the AppleTalk protocol
                   handler was fixed. This attack is only possible on the local
   		   subnet, and requires the AppleTalk protocol module to be loaded
   		   (which is not done by default).

   This update also reenables the deprecated CONFIG_USB_DEVICEFS option
   for legacy applications. It is not necessary to recompile the kernel
   to use USB devices in VMWare and VirtualBox and other programs using
   the old /proc/bus/usb interface.

   You still need to mount /proc/bus/usb if required by doing:

           mount -t usbfs none /proc/bus/usb

   or configuring it in /etc/fstab. The programs included in openSUSE 10.2
   do not require this legacy interface.

   This update also includes a new perl-Bootloader package which fixes various
   regressions in the boot menu generation during update of kernels.

   Please note that boot entries will be named:
           openSUSE 10.2 - Linux 
   now and that you can install multiple kernels in parallel.

   The update also fixes the following non security bugs:

   - patches.fixes/visor_write_race.patch:
     fix race allowing overstepping memory limit in visor_write (Mainline: 2.6.21)
   - patches.drivers/libata-ide-via-add-PCI-IDs:
     via82cxxx/pata_via:  backport PCI IDs (254158).
   - libata:  implement HDIO_GET_IDENTITY (255413).
   - sata_sil24:  Add Adaptec 1220SA PCI ID. (Mainline: 2.6.21)
   - ide:  backport hpt366 from devel tree (244502).
   - mm:  fix madvise infinite loop (248167).
   - libata:  hard reset on SERR_INTERNAL (241334).
   - limited WPA support for prism54 (207944)
   - jmicron: match class instead of function number (224784, 207707)
   - ahci: RAID mode SATA patch for Intel ICH9M (Mainline: 2.6.21)
   - libata: blacklist FUJITSU MHT2060BH for NCQ (Mainline: 2.6.21)
   - libata: add missing PM callbacks. (Mainline: 2.6.20)
   - patches.fixes/nfs-readdir-timestamp:
     Set meaningful value for fattr->time_start in readdirplus
     results. (244967).
   - patches.fixes/usb_volito.patch:
     wacom volito tablet not working (#248832).
   - patches.fixes/965-fix: fix detection of aperture size versus
     GTT size on G965 (#258013).
   - patches.fixes/sbp2-MODE_SENSE-fix.diff: use proper MODE SENSE,
     fixes recognition of device properties (261086)
   - patches.fixes/ipt_CLUSTERIP_refcnt_fix:
     ipv4/netfilter/ipt_CLUSTERIP.c - refcnt fix (238646)
   - patches.fixes/reiserfs-fix-vs-13060.diff: reiserfs: fix
     corruption with vs-13060 (257735).
   - patches.drivers/ati-rs400_200-480-disable-msi: pci-quirks:
     disable MSI on RS400-200 and RS480 (263893).
   - patches.drivers/libata-ahci-ignore-interr-on-SB600: ahci.c:
     workaround for SB600 SATA internal error issue (#264792).

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 the upgrade.

4) Package Location and Checksums

   The preferred method for installing security updates is to use the YaST
   Online Update (YOU) tool. YOU detects which updates are required and
   automatically performs 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.

   x86 Platform:

   openSUSE 10.2:

   Power PC Platform:

   openSUSE 10.2:

   x86-64 Platform:

   openSUSE 10.2:


   openSUSE 10.2:


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

      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

    There are two verification methods that can be used independently from
    each other to prove the authenticity of a downloaded file or RPM package:

    1) Using the internal gpg signatures of the rpm package
    2) MD5 checksums as provided in this announcement

    1) 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 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.

    2) If you need an alternative means of verification, use the md5sum
       command to verify the authenticity of the packages. Execute the command


       after you downloaded the file from a SUSE FTP server or its mirrors.
       Then compare the resulting md5sum with the one that is listed in the
       SUSE security announcement. Because the announcement containing the
       checksums is cryptographically signed (by, the
       checksums show proof of the authenticity of the package if the
       signature of the announcement is valid. Note that the md5 sums
       published in the SUSE Security Announcements are valid for the
       respective packages only. Newer versions of these packages cannot be

  - SUSE runs two security mailing lists to which any interested party may
        -   General Linux and SUSE security discussion.
            All SUSE security announcements are sent to this list.
            To subscribe, send an e-mail to
        -   SUSE's announce-only mailing list.
            Only SUSE's security announcements are sent to this list.
            To subscribe, send an e-mail to

    SUSE's security contact is  or .
    The  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.