CentOS

https://access.redhat.com/security/cve/CVE-2023-6931 RHEL 7 is listed as "Out of support scope" which means it's too old and the vulnerability not important enough. It also says It is not possible to trigger this issue with the default kernel.perf_event_paranoid sysctl value 2. You may check it with...

Is this a real system or a container?

bash-4.4# ls -laZ /var/lib/tftpboot total 2 drwxr-xr-x. 2 root root system_u:object_r:container_file_t:s0:c128,c144 1024 Jan 4 16:00 . drwxr-xr-x. 15 root root system_u:object_r:container_file_t:s0:c128,c144 1024 Apr 27 15:41 .. -rwxrwxrwx. 1 root root system_u:object_r:container_file_t:s0:c128,c14...

This looks like a question for a samba forum not here.

What are your permissions on /var/lib/tftpboot. Easiest way to show that is to run namei -l /var/lib/tftpboot. Also include the output from ls -laZ /var/lib/tftpboot

First you seem to have set this up in two separate and mutually incompatible ways. Either pick xinetd to start a connection OR run tftpd as a service all the time. Not both. I'd recommend dumping the xinetd bit and disabling that and concentrating on getting it running as a service first. After it w...

It's still the same as it ever was, a single person does the updates and releases them. Sometimes they are easy to rebuild, sometimes they are more difficult and it takes longer. They're still being built and released.

In the absense of any other suggestions, you could try removing the USB trackpad that libvirt sets up automatically on windows systems and use a plain old USB mouse instead. This is a setting in the VM xml, not the physical device.

Have you installed the proprietary nvidia or AMD graphics drivers?

Why are you using a CentOS 6 yum repo on CentOS 8. Don't. They are not compatible. Disable it or remove it.