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----------------------------------------------------------------------
Debian Security Advisory DSA-XXXX-1 security@debian.org
http://www.debian.org/security/ dann frazier
Jun 01, 2009 http://www.debian.org/security/faq
----------------------------------------------------------------------
Package : linux-2.6
Vulnerability : denial of service
Problem type : local/remote
Debian-specific: no
CVE Id(s) : CVE-2009-1630 CVE-2009-1633 CVE-2009-1758
Several vulnerabilities have been discovered in the Linux kernel that
may lead to a denial of service, privilege escalation or a sensitive
memory leak. The Common Vulnerabilities and Exposures project
identifies the following problems:
CVE-2009-1630
Frank Filz discovered that local users may be able to execute
files without execute permission when accessed via an nfs4 mount.
CVE-2009-1633
Jeff Layton and Suresh Jayaraman fixed several buffer overflows
in the CIFS filesystem whcih allow remote servers to cause memory
corruption.
CVE-2009-1758
Jan Beulich discovered an issue in Xen where local guest users may
cause a denial of service (oops).
This update also fixes a regression introduced by the fix for CVE-2009-1184
in 2.6.26-15lenny3. This prevents a boottime panic on systems with selinux
enabled.
For the stable distribution (lenny), these problems have been fixed in
version 2.6.26-15lenny3.
For the oldstable distribution (etch), these problems, where applicable,
will be fixed in future updates to linux-2.6 and linux-2.6.24.
We recommend that you upgrade your linux-2.6 and user-mode-linux packages.
Note: Debian carefully tracks all known security issues across every
linux kernel package in all releases under active security support.
However, given the high frequency at which low-severity security
issues are discovered in the kernel and the resource requirements of
doing an update, updates for lower priority issues will normally not
be released for all kernels at the same time. Rather, they will be
released in a staggered or "leap-frog" fashion.
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
The following matrix lists additional source packages that were rebuilt for
compatability with or to take advantage of this update:
Debian 5.0 (lenny)
user-mode-linux 2.6.26-1um-2+15lenny3
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, arm, armel, hppa, i386, ia64, mips, mipsel, powerpc, s390 and sparc.
### WILL FILL IN LATER ###
These changes will probably be included in 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: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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