Debian: DSA-5086-1 Moderate: Thunderbird Out-Of-Bounds Email Issue

An out-of-bounds write was discovered in Thunderbird, which could
be triggered via a malformed email message.

For the oldstable distribution (buster), this problem has been fixed
in version 1:91.6.1-1~deb10u1.

For the stable distribution (bullseye), this problem has been fixed in
version 1:91.6.1-1~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/source-package/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/