DSA 1846-1: New kvm packages fix denial of service
Posted on: 07/29/2009 06:40 AM

The Debian Security Team published a new security update for Debian GNU/Linux. Here the announcement:

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Debian Security Advisory DSA-1846-1 security@debian.org
http://www.debian.org/security/ Dann Frazier
July 28, 2009 http://www.debian.org/security/faq
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Package : kvm
Vulnerability : denial of service
Problem type : local
Debian-specific: no
CVE Id(s) : CVE-2009-2287

Matt T. Yourst discovered an issue in the kvm subsystem. Local
users with permission to manipulate /dev/kvm can cause a denial
of service (hang) by providing an invalid cr3 value to the
KVM_SET_SREGS call.

For the stable distribution (lenny), these problems have been fixed
in version 72+dfsg-5~lenny2.

For the unstable distribution (sid), these problems will be fixed soon.

We recommend that you upgrade your kvm packages, and rebuild any kernel
modules you have built from a kvm-source package version.

Upgrade instructions
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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
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Stable updates are available for amd64 and i386.

Source archives:

http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg.orig.tar.gz
Size/MD5 checksum: 3250251 899a66ae2ea94e994e06f637e1afef4a
http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg-5~lenny2.dsc
Size/MD5 checksum: 1340 e95d1e3129dd6eb2d7b139504a8682d5
http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg-5~lenny2.diff.gz
Size/MD5 checksum: 40508 22d3f4b490752c1db13affc506896f59

Architecture independent packages:

http://security.debian.org/pool/updates/main/k/kvm/kvm-source_72+dfsg-5~lenny2_all.deb
Size/MD5 checksum: 157856 593b7d018dc15553d1c690c941ff0dd7

amd64 architecture (AMD x86_64 (AMD64))

http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg-5~lenny2_amd64.deb
Size/MD5 checksum: 1105650 e29a433d9d83be7bf22dfb8297e3b63f

i386 architecture (Intel ia32)

http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg-5~lenny2_i386.deb
Size/MD5 checksum: 1034054 39113a71cf5fdbafcaed9f3f58ae2369


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 lt;pkggt;' and http://packages.debian.org/lt;pkggt;
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