In DjVuLibre 3.5.27, the sorting functionality (aka GArrayTemplate<TYPE>::sort) allows attackers to cause a denial-of-service (application crash due to an Uncontrolled Recursion) by crafting a PBM image file that is mishandled in libdjvu/GContainer.h.
lists.opensuse.org/opensuse-security-announce/2019-09/msg00086.html
lists.opensuse.org/opensuse-security-announce/2019-09/msg00087.html
lists.debian.org/debian-lts-announce/2019/08/msg00036.html
lists.debian.org/debian-lts-announce/2021/05/msg00022.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FPMG3VY33XGMIKE6QDYIUVS6A7GNTHTK/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JO65AWU7LEWNF6DDCZPRFTR2ZPP5XK6L/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7F7544WASYMOTFDR2WUEOQLN3ZEXNU4/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUEME45HVGTMDOYODAZYQOGWSZ2CEFWZ/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RYZTGKWY3NAKMIMTFYGN4ZO5XEQWPYRL/
security.gentoo.org/glsa/202007-36
sourceforge.net/p/djvu/bugs/299/
sourceforge.net/p/djvu/djvulibre-git/ci/e15d51510048927f172f1bf1f27ede65907d940d/
usn.ubuntu.com/4198-1/
www.debian.org/security/2021/dsa-5032