A gdk-pixbuf security update has been released for Debian GNU/Linux 11 to address several vulnerabilities.

DSA 5228-1: gdk-pixbuf security update

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Debian Security Advisory DSA-5228-1 security@debian.org
  https://www.debian.org/security/ Salvatore Bonaccorso
September 11, 2022   https://www.debian.org/security/faq
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Package : gdk-pixbuf
CVE ID : CVE-2021-44648 CVE-2021-46829
Debian Bug : 1014600

Several vulnerabilities were discovered in gdk-pixbuf, the GDK
Pixbuf library.

CVE-2021-44648

Sahil Dhar reported a heap-based buffer overflow vulnerability when
decoding the lzw compressed stream of image data, which may result
in the execution of arbitrary code or denial of service if a
malformed GIF image is processed.

CVE-2021-46829

Pedro Ribeiro reported a heap-based buffer overflow vulnerability
when compositing or clearing frames in GIF files, which may result
in the execution of arbitrary code or denial of service if a
malformed GIF image is processed.

For the stable distribution (bullseye), these problems have been fixed in
version 2.42.2+dfsg-1+deb11u1.

We recommend that you upgrade your gdk-pixbuf packages.

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

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/