Debian: DSA-5369-1 Critical: syslog-ng Denial Of Service

It was discovered that an integer overflow in the RFC3164 parser of
syslog-ng, a system logging daemon, may result in denial of service
via malformed syslog messages.

For the stable distribution (bullseye), this problem has been fixed in
version 3.28.1-2+deb11u1.

We recommend that you upgrade your syslog-ng packages.

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

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/