[SECURITY] [DSA 2110-1] New Linux 2.6.26 packages fix several issues

2010-09-2000:00:00

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Debian Security Advisory DSA-2110-1 [email protected]
http://www.debian.org/security/ dann frazier
September 17, 2010 http://www.debian.org/security/faq

Package : linux-2.6
Vulnerability : privilege escalation/denial of service/information leak
Problem type : local
Debian-specific: no
CVE Id(s) : CVE-2010-2492 CVE-2010-2954 CVE-2010-3078 CVE-2010-3080
CVE-2010-3081
Debian Bug(s) :

Several vulnerabilities have been discovered in the Linux kernel that
may lead to a privilege escalation, denial of service or information leak.
The Common Vulnerabilities and Exposures project identifies the following
problems:

CVE-2010-2492

Andre Osterhues reported an issue in the eCryptfs subsystem. A buffer
overflow condition may allow local users to cause a denial of service
or gain elevated privileges.

CVE-2010-2954

Tavis Ormandy reported an issue in the irda subsystem which may allow
local users to cause a denial of service via a NULL pointer dereference.

CVE-2010-3078

Dan Rosenberg discovered an issue in the XFS file system that allows
local users to read potentially sensitive kernel memory.

CVE-2010-3080

Tavis Ormandy reported an issue in the ALSA sequencer OSS emulation
layer. Local users with sufficient privileges to open /dev/sequencer
&#40;by default on Debian, this is members of the &#39;audio&#39; group&#41; can
cause a denial of service via a NULL pointer dereference.

CVE-2010-3081

Ben Hawkes discovered an issue in the 32-bit compatibility code
for 64-bit systems. Local users can gain elevated privileges due
to insufficient checks in compat_alloc_user_space allocations.

For the stable distribution (lenny), this problem has been fixed in
version 2.6.26-25lenny1.

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 &#40;lenny&#41;
 user-mode-linux                         2.6.26-1um-2+25lenny1

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 alpha, amd64, armel, hppa, i386, ia64, mipsel,
powerpc, and sparc. Updates for other architectures will be released as they
become available.

Source archives:

http://security.debian.org/pool/updates/main/l/linux-2.6/linux-2.6_2.6.26-25lenny1.diff.gz
Size/MD5 checksum: 7975777 f39bbdb91ea404d5174d636e3722c995
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-2.6_2.6.26.orig.tar.gz
Size/MD5 checksum: 61818969 85e039c2588d5bf3cb781d1c9218bbcb
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-2.6_2.6.26-25lenny1.dsc
Size/MD5 checksum: 5778 76122adfa3afe005deb3399383a2bd32

Architecture independent packages:

http://security.debian.org/pool/updates/main/l/linux-2.6/linux-source-2.6.26_2.6.26-25lenny1_all.deb
Size/MD5 checksum: 48768982 07edfb93c4b92a09d816c7142bdca0ca
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-tree-2.6.26_2.6.26-25lenny1_all.deb
Size/MD5 checksum: 112362 26c3562b8492b990a07741994b54d5ff
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-doc-2.6.26_2.6.26-25lenny1_all.deb
Size/MD5 checksum: 4629662 f7a91bed6e26fd5a36cb0d882df15892
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-patch-debian-2.6.26_2.6.26-25lenny1_all.deb
Size/MD5 checksum: 2961806 6992f6d3a88e41e804e1d1179b6f9c43
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-support-2.6.26-2_2.6.26-25lenny1_all.deb
Size/MD5 checksum: 127628 b7c6d712c237cae69a3ab3efca80cf11
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-manual-2.6.26_2.6.26-25lenny1_all.deb
Size/MD5 checksum: 1775764 46f01e171d2686b95d916e7713b4186f

alpha architecture (DEC Alpha)

amd64 architecture (AMD x86_64 (AMD64))

armel architecture (ARM EABI)

hppa architecture (HP PA RISC)

i386 architecture (Intel ia32)

ia64 architecture (Intel ia64)

mipsel architecture (MIPS (Little Endian))

powerpc architecture (PowerPC)

sparc architecture (Sun SPARC/UltraSPARC)

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

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: [email protected]
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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