[SECURITY] Fedora 34 Update: systemd-248.5-1.fc34
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Fedora Update Notification
FEDORA-2021-2a6ba64260
2021-07-22 01:13:10.976418
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Name : systemd
Product : Fedora 34
Version : 248.5
Release : 1.fc34
URL : https://www.freedesktop.org/wiki/Software/systemd
Summary : System and Service Manager
Description :
systemd is a system and service manager that runs as PID 1 and starts
the rest of the system. It provides aggressive parallelization
capabilities, uses socket and D-Bus activation for starting services,
offers on-demand starting of daemons, keeps track of processes using
Linux control groups, maintains mount and automount points, and
implements an elaborate transactional dependency-based service control
logic. systemd supports SysV and LSB init scripts and works as a
replacement for sysvinit. Other parts of this package are a logging daemon,
utilities to control basic system configuration like the hostname,
date, locale, maintain a list of logged-in users, system accounts,
runtime directories and settings, and daemons to manage simple network
configuration, network time synchronization, log forwarding, and name
resolution.
This package was built from the 248.5-stable branch of systemd.
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Update Information:
- Various minor documentation and correctness fixes. - CVE-2021-33910, #1984020:
an unchecked stack allocation could be used to crash systemd and cause the
system to reboot by creating a very long fuse mountpoint path. No need to log
out or reboot.
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ChangeLog:
* Tue Jul 20 2021 Zbigniew J��drzejewski-Szmek <zbyszek(a)in.waw.pl> - 248.5-1
- Various minor documentation and correctness fixes.
- CVE-2021-33910, #1984020: an unchecked stack allocation could be used to
crash systemd and cause the system to reboot by creating a very long
fuse mountpoint path.
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References:
[ 1 ] Bug #1984020 - CVE-2021-33910 systemd: uncontrolled allocation on the stack in
function unit_name_path_escape leads to crash [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=1984020
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-2a6ba64260' 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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