A squashfs-tools security update has been released for Fedora 34.

SECURITY: Fedora 34 Update: squashfs-tools-4.5-2.fc34

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Fedora Update Notification
FEDORA-2021-cdbd827c1e
2021-08-30 20:41:05.623010
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Name : squashfs-tools
Product : Fedora 34
Version : 4.5
Release : 2.fc34
URL :   https://github.com/plougher/squashfs-tools/archive/4.5.tar.gz
Summary : Utility for the creation of squashfs filesystems
Description :
Squashfs is a highly compressed read-only filesystem for Linux. This package
contains the utilities for manipulating squashfs filesystems.

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Update Information:

4.5 release (includes security fix for CVE-2021-40153)
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ChangeLog:

* Mon Jul 26 2021 Bruno Wolff III - 4.5-2
- Fix for sparse fragment bug 1985561
* Fri Jul 23 2021 Bruno Wolff III - 4.5-1
- First crack at 4.5 release
- Man pages still need significant work
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References:

[ 1 ] Bug #1998621 - CVE-2021-40153 squashfs-tools: unvalidated filepaths allow writing outside of destination
  https://bugzilla.redhat.com/show_bug.cgi?id=1998621
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-cdbd827c1e' 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