In Qt before 5.15.15, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.2, there can be an application crash in QXmlStreamReader via a crafted XML string that triggers a situation in which a prefix is greater than a length.
https://lists.debian.org/debian-lts-announce/2024/04/msg00027.html
https://lists.debian.org/debian-lts-announce/2023/08/msg00028.html