A libvirt security update has been released for Fedora 34.

SECURITY: Fedora 34 Update: libvirt-7.0.0-7.fc34

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Fedora Update Notification
FEDORA-2021-bce7f9b98c
2021-09-30 01:12:40.914482
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Name : libvirt
Product : Fedora 34
Version : 7.0.0
Release : 7.fc34
URL :   https://libvirt.org/
Summary : Library providing a simple virtualization API
Description :
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). The main package includes
the libvirtd server exporting the virtualization support.

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Update Information:

* More CAP_SETPCAP warning fixes (bz #1924218) * Handle unknown firmware.json
errors * CVE-2021-3667: Fix deadlock on virStoragePoolLookupByTargetPath failure
(bz #1986113)
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ChangeLog:

* Tue Jul 27 2021 Cole Robinson - 7.0.0-7
- More CAP_SETPCAP warning fixes (bz #1924218)
- Handle unknown firmware.json errors
- CVE-2021-3667: Fix deadlock on virStoragePoolLookupByTargetPath failure
(bz #1986113)
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References:

[ 1 ] Bug #1986094 - CVE-2021-3667 libvirt: Improper locking on ACL failure in virStoragePoolLookupByTargetPath API
  https://bugzilla.redhat.com/show_bug.cgi?id=1986094
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-bce7f9b98c' 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