[SECURITY] Fedora 33 Update: systemd-246.15-1.fc33

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Fedora Update Notification
FEDORA-2021-166e461c8d
2021-07-24 01:06:47.807012
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Name        : systemd
Product     : Fedora 33
Version     : 246.15
Release     : 1.fc33
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 246.15-stable branch of systemd.

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Update Information:

- Various correctness and potential crash fixes (systemd-journald, udev,
systemctl, systemd, systemd-tmpfiles, systemd-resolved) - Better handling of
very long sysfs paths - Compilation fixes for updated glibc and kernel headers -
Addition of new syscalls to seccomp filters - Latvian and Spanish/Dvorak
keyboard mappings - Shell completion fixes - Ignore FORCERENEW DHCP messages in
systemd-networkd (TALOS-2020-1142, CVE-2020-13529, #1959398) - by-uuid symlinks
for ubifs volumes are now created - 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&gt; - 246.15-1
- Various correctness and potential crash fixes (systemd-journald,
  udev, systemctl, systemd, systemd-tmpfiles, systemd-resolved)
- Better handling of very long sysfs paths
- Compilation fixes for updated glibc and kernel headers
- Addition of new syscalls to seccomp filters
- Latvian and Spanish/Dvorak keyboard mappings
- Shell completion fixes
- Ignore FORCERENEW DHCP messages in systemd-networkd (TALOS-2020-1142,
  CVE-2020-13529, #1959398)
- by-uuid symlinks for ubifs volumes are now created
- 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 #1959398 - CVE-2020-13529 systemd: crafted DHCP FORCERENEW packet can cause a
server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack
[fedora-all]
        https://bugzilla.redhat.com/show_bug.cgi?id=1959398
  [ 2 ] 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-2021-166e461c8d' 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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