After upgrading to Symantec Endpoint Protection 14.3 RU4 client some servers may crash due to a timing issue.
Release : 14.3 RU4 Client
SONAR (BASH) is requesting reputation info in two different threads using the same IRON file object. IRON does not synchronize this operation and one of the internal list entries gets corrupted and causes the crash.
This issue is fixed in Symantec Endpoint Protection (SEP) 18.104.22.168 (RU5). For information on how to obtain the latest build of SEP, see Download Symantec software, tools, and patches.