decompileAction: Prevent heap buffer overflow and underflow with usin…

…g OpCode
libming · Jul 12, 2020 · da9d86e · da9d86e
1 parent 6e76e8c
commit da9d86e
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/util/decompile.c b/util/decompile.c
@@ -3202,15 +3202,14 @@ decompileCAST(int n, SWF_ACTION *actions, int maxn)
 int
 decompileAction(int n, SWF_ACTION *actions, int maxn)
 {
-	if( n > maxn ) SWF_error("Action overflow!!");
 
 #ifdef DEBUG
 	fprintf(stderr,"%d:\tACTION[%3.3d]: %s\n",
 	        actions[n].SWF_ACTIONRECORD.Offset, n, 
 	        actionName(actions[n].SWF_ACTIONRECORD.ActionCode));
 #endif
 
-	switch(actions[n].SWF_ACTIONRECORD.ActionCode)
+	switch(OpCode(actions, n, maxn))
 	{
 	case SWFACTION_END:
 		return 0;