A Tor security update has been released for Debian GNU/Linux 11 to address a logic error that resulted in allowing unsafe SOCKS4 traffic to pass.

DSA 5320-1: tor security update

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Debian Security Advisory DSA-5320-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
January 16, 2023   https://www.debian.org/security/faq
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Package : tor
CVE ID : CVE-2023-23589

A logic error was discovered in the implementation of the "SafeSocks"
option of Tor, a connection-based low-latency anonymous communication
system, which did result in allowing unsafe SOCKS4 traffic to pass.

For the stable distribution (bullseye), this problem has been fixed in
version 0.4.5.16-1.

We recommend that you upgrade your tor packages.

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

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/