Fix 8361cf5a73: Missing bounds check for house specs. (#10625)

2023-04-10 16:00:34 +01:00
parent e2f1cd44dc
commit 246ba6f00a
1 changed files with 1 additions and 1 deletions
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -5781,7 +5781,7 @@ static void TownHouseMapSpriteGroup(ByteReader *buf, uint8 idcount)
 	if (!IsValidGroupID(groupid, "TownHouseMapSpriteGroup")) return;

 	for (uint i = 0; i < idcount; i++) {
-		HouseSpec *hs = _cur.grffile->housespec[houses[i]];
+		HouseSpec *hs = houses[i] >= NUM_HOUSES_PER_GRF ? nullptr : _cur.grffile->housespec[houses[i]];

 		if (hs == nullptr) {
 			grfmsg(1, "TownHouseMapSpriteGroup: House %d undefined, skipping.", houses[i]);