DSA-1846-1 kvm -- denial of service

Debian Security Advisory

DSA-1846-1 kvm -- denial of service

Date Reported:

28 Jul 2009

Affected Packages:

kvm

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2009-2287.

More information:

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.

Fixed in:

Debian GNU/Linux 5.0 (lenny)

Source:

http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg.orig.tar.gz

http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg-5~lenny2.dsc

http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg-5~lenny2.diff.gz

Architecture-independent component:

http://security.debian.org/pool/updates/main/k/kvm/kvm-source_72+dfsg-5~lenny2_all.deb

AMD64:

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

Intel IA-32:

http://security.debian.org/pool/updates/main/k/kvm/kvm_72+dfsg-5~lenny2_i386.deb

MD5 checksums of the listed files are available in the original advisory.