# Percona XtraDB Cluster 8.0.22-13.1


* **Date**

    March 22, 2021



* **Installation**

    [Installing Percona XtraDB Cluster](https://docs.percona.com/percona-xtradb-cluster/8.0/install-index.html)


Percona XtraDB Cluster 8.0.22-13.1 includes all of the features and bug fixes available in Percona Server for MySQL. See the corresponding [release notes for Percona Server for MySQL 8.0.22-13](https://www.percona.com/doc/percona-server/LATEST/release-notes/Percona-Server-8.0.22-13.html) for more details on these changes.

This release fixes security vulnerability [CVE-2021-27928](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27928), a similar issue to [CVE-2020-15180](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15180)

## Improvements


* [PXC-3575](https://jira.percona.com/browse/PXC-3575): Implement package changes for SELinux and AppArmor


* [PXC-3115](https://jira.percona.com/browse/PXC-3115): Create Default SELinux and AppArmor policy

## Bugs Fixed


* [PXC-3536](https://jira.percona.com/browse/PXC-3536): Modify processing to not allow threads/queries to be killed if the thread is in TOI


* [PXC-3565](https://jira.percona.com/browse/PXC-3565): Correct Performance of SELECT in PXC


* [PXC-3502](https://jira.percona.com/browse/PXC-3502): Correct condition in thd_binlog_format() function for List Index process (Thanks to user Paweł Bromboszcz for reporting this issue)


* [PXC-3501](https://jira.percona.com/browse/PXC-3501): Modify wsrep_row_upd_check_foreign_constraints() to include foreign key dependencies in the writesets for DELETE query (Thanks to user Steven Gales for reporting this issue)


* [PXC-2913](https://jira.percona.com/browse/PXC-2913): Correct MDL locks assertion when wsrep provider is unloaded


* [PXC-3475](https://jira.percona.com/browse/PXC-3475): Adjust mysqld_safe script to parse 8.0 log style properly

## Known Issues (unfixed problems that you should be aware of)


* [PXC-3039](https://jira.percona.com/browse/PXC-3039): No useful error messages if an SSL-disabled node tries to join an SSL-enabled cluster


* [PXC-3092](https://jira.percona.com/browse/PXC-3092): Log a warning at startup if a keyring is specified, but cluster traffic encryption is turned off


* [PXC-3093](https://jira.percona.com/browse/PXC-3093): Completed SST Transfer incorrectly logged by garbd (Timing is not correct)