Debian Security Advisory

DSA-3285-1 qemu-kvm -- security update

Date Reported:
13 Jun 2015
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 788460.
In Mitre's CVE dictionary: CVE-2015-3209, CVE-2015-4037.
More information:

Several vulnerabilities were discovered in qemu-kvm, a full virtualization solution on x86 hardware.

  • CVE-2015-3209

    Matt Tait of Google's Project Zero security team discovered a flaw in the way QEMU's AMD PCnet Ethernet emulation handles multi-TMD packets with a length above 4096 bytes. A privileged guest user in a guest with an AMD PCNet ethernet card enabled can potentially use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process.

  • CVE-2015-4037

    Kurt Seifried of Red Hat Product Security discovered that QEMU's user mode networking stack uses predictable temporary file names when the -smb option is used. An unprivileged user can use this flaw to cause a denial of service.

For the oldstable distribution (wheezy), these problems have been fixed in version 1.1.2+dfsg-6+deb7u8.

We recommend that you upgrade your qemu-kvm packages.