A bcel security update has been released for Debian GNU/Linux 11 to address an integer truncation issue.

DSA 5256-1: bcel security update

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Debian Security Advisory DSA-5256-1 security@debian.org
  https://www.debian.org/security/ Markus Koschany
October 18, 2022   https://www.debian.org/security/faq
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Package : bcel
CVE ID : CVE-2022-34169
Debian Bug : 1015860

The Apache Xalan Java XSLT library is vulnerable to an integer truncation issue
when processing malicious XSLT stylesheets. This can be used to corrupt Java
class files generated by the internal XSLTC compiler and execute arbitrary Java
bytecode. In Debian the vulnerable code is in the bcel source package.

For the stable distribution (bullseye), this problem has been fixed in
version 6.5.0-1+deb11u1.

We recommend that you upgrade your bcel packages.

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

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/