An out-of-bounds write vulnerability was found in DjVuLibre in DJVU::DjVuTXT::decode() in DjVuText.cpp via a crafted djvu file which may lead to crash and segmentation fault. This flaw affects DjVuLibre versions prior to 3.5.28.
https://www.debian.org/security/2021/dsa-5032
https://lists.debian.org/debian-lts-announce/2021/07/msg00002.html