Debian: DSA-4454-1 Security Update for QEMU: Denial of Service Risks

Multiple security issues were discovered in QEMU, a fast processor
emulator, which could result in denial of service, the execution of
arbitrary code or information disclosure.

In addition this update backports support to passthrough the new
md-clear CPU flag added in the intel-microcode update shipped in DSA 4447
to x86-based guests.

For the stable distribution (stretch), these problems have been fixed in
version 1:2.8+dfsg-6+deb9u6.

We recommend that you upgrade your qemu packages.

For the detailed security status of qemu please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/qemu

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/