A kernel security update has been released for Fedora 34.

SECURITY: Fedora 34 Update: kernel-5.11.13-300.fc34

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Fedora Update Notification
FEDORA-2021-8b64847a44
2021-04-24 20:00:51.079722
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Name : kernel
Product : Fedora 34
Version : 5.11.13
Release : 300.fc34
URL :   https://www.kernel.org/
Summary : The Linux kernel
Description :
The kernel meta package

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Update Information:

The 5.11.13 stable kernel update contains a number of important fixes across the
tree.
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ChangeLog:

* Sat Apr 10 2021 Justin M. Forbes [5.11.13-300]
- Add CONFIG_NVIDIA_CARMEL_CNP_ERRATUM to RHEL configs too (Justin M. Forbes)
- Add config for CONFIG_NVIDIA_CARMEL_CNP_ERRATUM (Justin M. Forbes)
* Sat Apr 10 2021 Justin M. Forbes [5.11.13-15]
- Re-enable PSR2 on Tigerlake with new workarounds from Intel (Lyude Paul)
- Fedora: Enable CHARGER_GPIO on aarch64 too (Peter Robinson)
- Fix build with patch for CVE-2021-30178 (Justin M. Forbes)
- KVM: x86: hyper-v: Fix Hyper-V context null-ptr-deref (Wanpeng Li)
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References:

[ 1 ] Bug #1947139 - CVE-2021-30178 kernel: NULL pointer dereference in synic_get function in arch/x86/kvm/hyperv.c for certain accesses to the SynIC Hyper-V context
  https://bugzilla.redhat.com/show_bug.cgi?id=1947139
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-8b64847a44' 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