A libwebp security update has been released for Debian GNU/Linux 11 to address an issue that may result in denial of service.

DSA 5408-1: libwebp security update

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Debian Security Advisory DSA-5408-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
May 21, 2023   https://www.debian.org/security/faq
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Package : libwebp
CVE ID : CVE-2023-1999
Debian Bug : 1035371

Irvan Kurniawan discovered a double free in the libwebp image compression
library which may result in denial of service.

For the stable distribution (bullseye), this problem has been fixed in
version 0.6.1-2.1+deb11u1.

We recommend that you upgrade your libwebp packages.

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

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/