A kernel security update has been released for Fedora 33.

SECURITY: Fedora 33 Update: kernel-5.11.8-200.fc33

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Fedora Update Notification
FEDORA-2021-e49da8a226
2021-03-24 02:39:06.119556
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Name : kernel
Product : Fedora 33
Version : 5.11.8
Release : 200.fc33
URL :   https://www.kernel.org/
Summary : The Linux kernel
Description :
The kernel meta package

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Update Information:

The 5.11.8 stable kernel update contains a number of important fixes across the
tree.
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ChangeLog:

* Sun Mar 21 2021 Justin M. Forbes [5.11.8-10]
- This is a released kernel branch (Justin M. Forbes)
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References:

[ 1 ] Bug #1940623 - CVE-2020-27171 kernel: Integer underflow when restricting speculative pointer arithmetic
  https://bugzilla.redhat.com/show_bug.cgi?id=1940623
[ 2 ] Bug #1940627 - CVE-2020-27170 kernel: Speculation on pointer arithmetic against bpf_context pointer
  https://bugzilla.redhat.com/show_bug.cgi?id=1940627
[ 3 ] Bug #1941762 - CVE-2021-28950 kernel: fuse: stall on CPU can occur because a retry loop continually finds the same bad inode
  https://bugzilla.redhat.com/show_bug.cgi?id=1941762
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-e49da8a226' 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