A flac security update has been released for Debian GNU/Linux 11 to address a buffer overflow issue.

[SECURITY] [DSA 5500-1] flac security update

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Debian Security Advisory DSA-5500-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
September 18, 2023 https://www.debian.org/security/faq
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Package : flac
CVE ID : CVE-2020-22219

A buffer overflow was discovered in flac, a library handling Free
Lossless Audio Codec media, which could potentially result in the
execution of arbitrary code.

For the oldstable distribution (bullseye), this problem has been fixed
in version 1.3.3-2+deb11u2.

We recommend that you upgrade your flac packages.

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

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/