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

DSA 5393-1: chromium security update

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Debian Security Advisory DSA-5393-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
April 22, 2023   https://www.debian.org/security/faq
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Package : chromium
CVE ID : CVE-2023-2133 CVE-2023-2134 CVE-2023-2135 CVE-2023-2136
CVE-2023-2137

Multiple security issues were discovered in Chromium, which could result
in the execution of arbitrary code, denial of service or information
disclosure.

For the stable distribution (bullseye), these problems have been fixed in
version 112.0.5615.138-1~deb11u1.

We recommend that you upgrade your chromium packages.

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

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/