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.
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.
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.