Linux Security
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Linux Security

Debian: DSA-1846-1: New kvm packages fix denial of service

Date 29 Jul 2009
537
Posted By LinuxSecurity Advisories
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.
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Debian Security Advisory DSA-1846-1                  This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                             Dann Frazier
July 28, 2009                         https://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
- --------------------

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 amd64 and i386.

Source archives:

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

Architecture independent packages:

  https://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))

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

i386 architecture (Intel ia32)

  https://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 https://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
Package info: `apt-cache show ' and https://packages.debian.org/

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