id summary reporter owner description type status priority milestone component version severity resolution keywords cc 1245 segfault error 14 in liblber-2.4.so.2.10.8 ctodd@… "Ubuntu 18.04.3 running OpenVPN 2.4.8. Server uses LDAP for authentication and periodically (about once every few days) stops authenticating users. Leading up to this issue, we sometimes see users attempt to authenticate with invalid credentials. In the logs we see the following variations of errors : Dec 18 13:21:31 sfo-openvpn1 openvpn[77827]: pam_ldap: error trying to bind as user ""cn=someuser,ou=people,dc=somedomain,dc=com"" (Invalid credentials) Dec 18 13:21:33 kernel: [3326305.784762] openvpn[44256]: segfault at 7f0bbeba6fc7 ip 00007f0bbeba6fc7 sp 00007f0bb4d82dc0 error 14 in liblber-2.4.so.2.10.8[7f0bbf1fe000+d000] Dec 19 00:02:03 openvpn[124002]: pam_ldap: error trying to bind as user ""cn=someuser,ou=people,dc=somedomain,dc=com"" (Invalid credentials) Dec 19 00:02:12 kernel: [3364744.281920] openvpn[124253]: segfault at 7f570ed8ffc7 ip 00007f570ed8ffc7 sp 00007f570539ddc0 error 14 in libcap-ng.so.0.0.0[7f570fc5d000+4000] We have upgraded all system libraries and recompiled the latest available version of OpenVPN. It should be noted that we use the Viscosity client with Yubikeys, and thus have server side tokens enabled. Chris" Bug / Defect closed major Generic / unclassified OpenVPN 2.4.8 (Community Ed) Not set (select this one, unless your'e a OpenVPN developer) worksforme segfault liblber bmccord@…