A kernel-tools security update has been released for Fedora 33.

SECURITY: Fedora 33 Update: kernel-tools-5.11.20-200.fc33

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Fedora Update Notification
FEDORA-2021-05152dbcf5
2021-05-16 02:06:09.511519
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Name : kernel-tools
Product : Fedora 33
Version : 5.11.20
Release : 200.fc33
URL :   http://www.kernel.org/
Summary : Assortment of tools for the Linux kernel
Description :
This package contains the tools/ directory from the kernel source
and the supporting documentation.

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Update Information:

The 5.11.20 stable kernel update contains a number of important fixes across the
tree.
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ChangeLog:

* Wed May 12 2021 Justin M. Forbes - 5.11.20-200
- Linux v5.11.20
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References:

[ 1 ] Bug #1959514 - CVE-2021-23134 kernel: use-after-free in nfc sockets
  https://bugzilla.redhat.com/show_bug.cgi?id=1959514
[ 2 ] Bug #1959556 - CVE-2021-3490 kernel: Linux kernel eBPF bitwise ops ALU32 bounds tracking
  https://bugzilla.redhat.com/show_bug.cgi?id=1959556
[ 3 ] Bug #1959559 - CVE-2021-3489 kernel: Linux kernel eBPF RINGBUF map oversized allocation
  https://bugzilla.redhat.com/show_bug.cgi?id=1959559
[ 4 ] Bug #1959565 - CVE-2021-3491 kernel: Linux kernel io_uring PROVIDE_BUFFERS MAX_RW_COUNT bypass
  https://bugzilla.redhat.com/show_bug.cgi?id=1959565
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-05152dbcf5' 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