A NULL pointer dereference flaw in btrfs_root_node in fs/btrfs/ctree.c may occur if rcu_dereference function return is not validated in time of failure. This flaw could allow an attacker to crash the system or leak internal kernel information.
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1775189]
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
This was fixed for Fedora with the 5.3.4 stable kernel updates.