A brotli security update has been released for Debian GNU/Linux 10 to address a buffer overflow.

DSA 4801-1: brotli security update

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Debian Security Advisory DSA-4801-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
December 01, 2020   https://www.debian.org/security/faq
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Package : brotli
CVE ID : CVE-2020-8927

A buffer overflow was discovered in Brotli, a generic-purpose lossless
compression suite.

For the stable distribution (buster), this problem has been fixed in
version 1.0.7-2+deb10u1.

We recommend that you upgrade your brotli packages.

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

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/