In Wireshark 2.6.0 to 2.6.4 and 2.4.0 to 2.4.10, the dissection engine could crash. This was addressed in epan/tvbuff_composite.c by preventing a heap-based buffer over-read.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-19625.json"