In Wireshark 3.2.0 to 3.2.7, the GQUIC dissector could crash. This was addressed in epan/dissectors/packet-gquic.c by correcting the implementation of offset advancement.
https://www.wireshark.org/security/wnpa-sec-2020-15.html
https://lists.debian.org/debian-lts-announce/2021/02/msg00008.html
https://gitlab.com/wireshark/wireshark/-/issues/16887
https://gitlab.com/wireshark/wireshark/-/commit/b287e7165e8aa89cde6ae37e7c257c5d87d16b9b