scan.c in x11vnc 0.9.16 uses IPC_CREAT|0777 in shmget calls, which allows access by actors other than the current user.
Created x11vnc tracking bugs for this issue:
Affects: epel-all [bug 1933604]
Affects: fedora-all [bug 1933603]
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.