A spice security update has been released for Debian GNU/Linux 10 to address multiple buffer overflow vulnerabilities in the QUIC image decoding process of spice.

DSA 4771-1: spice security update

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Debian Security Advisory DSA-4771-1 security@debian.org
  https://www.debian.org/security/ Salvatore Bonaccorso
October 11, 2020   https://www.debian.org/security/faq
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Package : spice
CVE ID : CVE-2020-14355
Debian Bug : 971750

Frediano Ziglio discovered multiple buffer overflow vulnerabilities in
the QUIC image decoding process of spice, a SPICE protocol client and
server library, which could result in denial of service, or possibly,
execution of arbitrary code.

For the stable distribution (buster), this problem has been fixed in
version 0.14.0-1.3+deb10u1.

We recommend that you upgrade your spice packages.

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

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/