More informations in https://security.libvirt.org/2017/0002.html .
For the stable distribution (stretch), this problem has been fixed in
version 3.0.0-4+deb9u1.
For the unstable distribution (sid), this problem has been fixed in
version 3.8.0-3.
We recommend that you upgrade your libvirt packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
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