This update for tigervnc provides the following fixes:
Prevent malicious server from crashing a server via a buffer overflow, a similar flaw as the LibVNCServer issues CVE-2016-9941 and CVE-2016-9942.. (bsc#1019274)
CVE-2016-10207: Prevent potential crash due to insufficient clean-up after failure to establish TLS
connection. (bsc#1023012)