An openexr security update has been released for Debian GNU/Linux 11 to address multiple security vulnerabilities.

DSA 5299-1: openexr security update

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Debian Security Advisory DSA-5299-1 security@debian.org
  https://www.debian.org/security/ Markus Koschany
December 10, 2022   https://www.debian.org/security/faq
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Package : openexr
CVE ID : CVE-2021-3598 CVE-2021-3605 CVE-2021-3933 CVE-2021-3941
CVE-2021-23215 CVE-2021-26260 CVE-2021-45942
Debian Bug : 992703 990450 990899 1014828 1014828

Multiple security vulnerabilities have been found in OpenEXR, command-line
tools and a library for the OpenEXR image format. Buffer overflows or
out-of-bound reads could lead to a denial of service (application crash) if a
malformed image file is processed.

For the stable distribution (bullseye), these problems have been fixed in
version 2.5.4-2+deb11u1.

We recommend that you upgrade your openexr packages.

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

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/