Description of problem:
Happens frequently without me doing anything specific to trigger it, on current F36.
SELinux is preventing pool-/usr/libex from 'read' accesses on the directory /var/lib/flatpak/repo.

*****  Plugin catchall_labels (83.8 confidence) suggests   *******************

If you want to allow libex to have read access on the repo directory
Then you need to change the label on /var/lib/flatpak/repo
Do
# semanage fcontext -a -t FILE_TYPE '/var/lib/flatpak/repo'
where FILE_TYPE is one of the following: bin_t, boot_t, dbusd_etc_t, device_t, devpts_t, etc_runtime_t, etc_t, fonts_cache_t, fonts_t, lib_t, locale_t, man_cache_t, man_t, pkcs11_modules_conf_t, root_t, shell_exec_t, src_t, system_conf_t, system_db_t, textrel_shlib_t, tmpfs_t, usr_t, var_run_t.
Then execute:
restorecon -v '/var/lib/flatpak/repo'


*****  Plugin catchall (17.1 confidence) suggests   **************************

If you believe that libex should be allowed read access on the repo directory by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'pool-/usr/libex' --raw | audit2allow -M my-poolusrlibex
# semodule -X 300 -i my-poolusrlibex.pp

Additional Information:
Source Context                system_u:system_r:flatpak_helper_t:s0
Target Context                system_u:object_r:var_lib_t:s0
Target Objects                /var/lib/flatpak/repo [ dir ]
Source                        pool-/usr/libex
Source Path                   pool-/usr/libex
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
SELinux Policy RPM            selinux-policy-targeted-36.1-1.fc36.noarch
Local Policy RPM              flatpak-selinux-1.12.4-2.fc36.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 5.16.1-200.fc35.x86_64 #1 SMP
                              PREEMPT Mon Jan 17 00:49:29 UTC 2022 x86_64 x86_64
Alert Count                   7
First Seen                    2022-02-11 08:37:05 PST
Last Seen                     2022-02-11 08:37:07 PST
Local ID                      62bd2dbd-05d0-4a2c-aad1-f72b80279729

Raw Audit Messages
type=AVC msg=audit(1644597427.157:508): avc:  denied  { read } for  pid=16275 comm="pool-/usr/libex" name="repo" dev="dm-1" ino=3014773 scontext=system_u:system_r:flatpak_helper_t:s0 tcontext=system_u:object_r:var_lib_t:s0 tclass=dir permissive=0


Hash: pool-/usr/libex,flatpak_helper_t,var_lib_t,dir,read

Version-Release number of selected component:
selinux-policy-targeted-36.1-1.fc36.noarch

Additional info:
component:      flatpak
reporter:       libreport-2.16.0
hashmarkername: setroubleshoot
kernel:         5.16.1-200.fc35.x86_64
type:           libreport