A thunderbird security update has been released for Debian GNU/Linux 10 and 11.

DSA 5158-1: thunderbird security update

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Debian Security Advisory DSA-5158-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
June 04, 2022   https://www.debian.org/security/faq
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Package : thunderbird
CVE ID : CVE-2022-1529 CVE-2022-1802 CVE-2022-1834 CVE-2022-31736
CVE-2022-31737 CVE-2022-31738 CVE-2022-31740 CVE-2022-31741
CVE-2022-31742 CVE-2022-31747

Multiple security issues were discovered in Thunderbird, which could
result in denial of service or the execution of arbitrary code.

For the oldstable distribution (buster), these problems have been fixed
in version 1:91.10.0-1~deb10u1.

For the stable distribution (bullseye), these problems have been fixed in
version 1:91.10.0-1~deb11u1.

We recommend that you upgrade your thunderbird packages.

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

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/