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Debian Security Advisory DSA-XXXX-1                security@debian.org
http://www.debian.org/security/                           dann frazier
May 21, 2010                        http://www.debian.org/security/faq
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Package        : linux-2.6
Vulnerability  : privilege escalation/denial of service
Problem type   : local
Debian-specific: no
CVE Id(s)      : CVE-2009-4537 CVE-2010-0727 CVE-2010-1083 CVE-2010-1084
                 CVE-2010-1086 CVE-2010-1087 CVE-2010-1088 CVE-2010-1162
                 CVE-2010-1173 CVE-2010-1187 CVE-2010-1437 CVE-2010-1446
                 CVE-2010-1451
Debian Bug(s)  : 573071
                 
Several vulnerabilities have been discovered in the Linux kernel that
may lead to a denial of service or privilege escalation. The Common
Vulnerabilities and Exposures project identifies the following problems:

CVE-2009-4537

    Fabian Yamaguchi reported a missing check for Ethernet frames larger
    than the MTU in the r8169 driver. This may allow users on the local
    network to crash a system, resulting in a denial of service.

CVE-2010-0727

    Sachin Prabhu reported an issue in the GFS2 filesystem. Local users
    can trigger a BUG() altering the permissions on a locked file,
    resulting in a denial of service.

CVE-2010-1083

    Linus Torvalds reported an issue in the USB subsystem, which may allow
    local users to obtain portions of sensitive kernel memory.

CVE-2010-1084

    Neil Brown reported an issue in the Bluetooth subsystem that may
    permit remote attackers to overwrite memory through the creation
    of large numbers of sockets, resulting in a denial of service.

CVE-2010-1086

    Ang Way Chuang reported an issue in the DVB subsystem for Digital
    TV adapters. By creating a specially-encoded MPEG2-TS frame, a remote
    attacker could cause the receiver to enter an endless loop, resulting
    in a denial of service.

CVE-2010-1087

    Trond Myklebust reported an issue in the NFS filesystem. A local
    user may cause an oops by sending a fatal signal during a file
    truncation operation, resulting in a denial of service.

CVE-2010-1088

    Al Viro reported an issue where automount symlinks may not
    be followed when LOOKUP_FOLLOW is not set. This has an unknown
    security impact.

CVE-2010-1162

    Catalin Marinas reported an issue in the tty subsystem that allows
    local attackers to cause a kernel memory leak, possibly resulting
    in a denial of service.

CVE-2010-1173

    Chris Guo from Nokia China and Jukka Taimisto and Olli Jarva from
    Codenomicon Ltd reported an issue in the SCTP subsystem that allows
    a remote attacker to cause a denial of service using a malformed init
    package.

CVE-2010-1187

    Neil Hormon reported an issue in the TIPC subsystem. Local users can
    cause a denial of service by way of a NULL pointer dereference by
    sending datagrams through AF_TIPC before entering network mode.

CVE-2010-1437

    Toshiyuki Okajima reported a race condition in the keyring subsystem.
    Local users can cause memory corruption via keyctl commands that
    access a keyring in the process of being deleted, resulting in a
    denial of service.

CVE-2010-1446

    Wufei reported an issue with kgdb on the PowerPC architecture,
    allowing local users to write to kernel memory. Note: this issue
    does not affect binary kernels provided by Debian. The fix is
    provided for the benefit of users who build their own kernels
    from Debian source.

CVE-2010-1451

    Brad Spengler reported an issue on the SPARC architecture that allows
    local users to execute non-executable pages.

This update also includes fixes a regression introduced by a previous
update. See the referenced Debian bug page for details.

For the stable distribution (lenny), this problem has been fixed in
version 2.6.26-22lenny1.

We recommend that you upgrade your linux-2.6 and user-mode-linux
packages.

The following matrix lists additional source packages that were
rebuilt for compatibility with or to take advantage of this update:

                                             Debian 5.0 (lenny)
     user-mode-linux                         2.6.26-1um-2+22lenny1

Upgrade instructions
--------------------

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.

Debian GNU/Linux 5.0 alias lenny
--------------------------------

Stable updates are available for X


  These files will probably be moved into the stable distribution on
  its next update.

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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>