A flaw was found in Linux kernel. Insecure handling of root directory for path lookups in io_uring may lead to a process inside a mount namespace to gain access to the filesystem outside of it.
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1887423]
This was fixed for Fedora with 5.4.24 stable kernel updates.
*** Bug 1903291 has been marked as a duplicate of this bug. ***