A qemu security update has been released for Debian GNU/Linux 10 to address multiple security issues that could result in denial of service.

DSA 4728-1: qemu security update

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Debian Security Advisory DSA-4728-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
July 19, 2020   https://www.debian.org/security/faq
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Package : qemu
CVE ID : CVE-2020-10756 CVE-2020-13361 CVE-2020-13362
CVE-2020-13754 CVE-2020-13659
Debian Bug : 964247 961887 961887 961888

Multiple security issues were discovered in QEMU, a fast processor
emulator, which could result in denial of service.

For the stable distribution (buster), these problems have been fixed in
version 1:3.1+dfsg-8+deb10u6.

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/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/