A log4j security update has been released for Fedora 34.

SECURITY: Fedora 34 Update: log4j-2.17.0-1.fc34

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Fedora Update Notification
FEDORA-2021-5c9d12a93e
2021-12-27 00:55:46.576292
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Name : log4j
Product : Fedora 34
Version : 2.17.0
Release : 1.fc34
URL :   http://logging.apache.org/log4j
Summary : Java logging package
Description :
Log4j is a tool to help the programmer output log statements to a
variety of output targets.

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Update Information:

Update log4j to 2.17.0 for CVE-2021-45105 Denial of Service attack
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ChangeLog:

* Sat Dec 18 2021 Paul Wouters - 2.17.0-1
- Update log4j to 2.17.0 for CVE-2021-45105 Denial of Service attack
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References:

[ 1 ] Bug #2032580 - CVE-2021-45046 log4j-core: DoS in log4j 2.x with thread context message pattern and context lookup pattern (incomplete fix for CVE-2021-44228)
  https://bugzilla.redhat.com/show_bug.cgi?id=2032580
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-5c9d12a93e' at the command
line. For more information, refer to the dnf documentation available at
  http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
  https://fedoraproject.org/keys
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