A chromium regression update has been released for Debian GNU/Linux 10 to address an issue introduced by the previous update.

DSA 4714-3: chromium regression update

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Debian Security Advisory DSA-4714-3 security@debian.org
  https://www.debian.org/security/ Michael Gilbert
July 13, 2020   https://www.debian.org/security/faq
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Package : chromium
Debian Bug : 963548

The previous update for chromium released as DSA 4714-2 contained a flaw in
the service worker implementation. This problem causes the browser to crash
when a connection error occurs. Updated chromium packages are now available
that correct this issue.

For the stable distribution (buster), this problem has been fixed in
version 83.0.4103.116-1~deb10u3.

We recommend that you upgrade your chromium packages.

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

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/