CVE-2026-90556

Name	CVE-2026-90556
Description	Freeciv versions before 3.2.6 contain a heap buffer overflow in worklist_load() when processing savegame files with declared worklist lengths exceeding the fixed array bound of 64 elements. Attackers can craft malicious savegame files that write past the entries array into adjacent heap-allocated struct fields, potentially corrupting memory when a user or server operator loads the file.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
freeciv (PTS)	bookworm, bookworm (security)	3.0.6-1+deb12u1	vulnerable
	trixie (security), trixie	3.1.4+ds-2+deb13u1	vulnerable
	forky, sid	3.2.6+ds-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
freeciv	source	(unstable)	3.2.6+ds-1

[trixie] - freeciv <no-dsa> (Minor issue)
https://redmine.freeciv.org/issues/2161