A gpac security update has been released for Debian GNU/Linux 11 to address multiple security issues.

DSA 4966-1: gpac security update

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Debian Security Advisory DSA-4966-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
August 31, 2021   https://www.debian.org/security/faq
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Package : gpac
CVE ID : CVE-2021-21834 CVE-2021-21836 CVE-2021-21837 CVE-2021-21838
CVE-2021-21839 CVE-2021-21840 CVE-2021-21841 CVE-2021-21842
CVE-2021-21843 CVE-2021-21844 CVE-2021-21845 CVE-2021-21846
CVE-2021-21847 CVE-2021-21848 CVE-2021-21849 CVE-2021-21850
CVE-2021-21853 CVE-2021-21854 CVE-2021-21855 CVE-2021-21857
CVE-2021-21858 CVE-2021-21859 CVE-2021-21860 CVE-2021-21861

Multiple security issues were discovered in the GPAC multimedia framework
which could result in denial of service or the execution of arbitrary code.

The oldstable distribution (buster) is not affected.

For the stable distribution (bullseye), these problems have been fixed in
version 1.0.1+dfsg1-4+deb11u1.

We recommend that you upgrade your gpac packages.

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

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/