Freeciv before 3.2.6 Heap Buffer Overflow via worklist_load
cve-program · CVE-2026-90556
PublishedFreeciv 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.
Read the publisher's advisoryAffected versions, risk and source history
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CVE-2026-90556 · CVE overview and exploitation status
cve-program · CVE-2026-90556
- https://github.com/freeciv/freeciv/commit/75ecde3e86ddf2fe775768450e9a290a4f4d4387
- https://github.com/freeciv/freeciv
- https://redmine.freeciv.org/issues/2161
- https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame3.c#L964
- https://github.com/freeciv/freeciv/releases/tag/R3_2_6
- https://github.com/freeciv/freeciv/blob/R3_2_5/server/savegame/savegame2.c#L788
- https://www.vulncheck.com/advisories/freeciv-before-3.2.6-heap-buffer-overflow-via-worklist-load
Related changes
Linked by CVE identifierNo related changes are available here.