Merged revisions 75449 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.2

........
r75449 | russell | 2007-07-17 15:57:09 -0500 (Tue, 17 Jul 2007) | 3 lines

Properly check for the length in the skinny packet to prevent an invalid memcpy.
(ASA-2007-016)

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@75450 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_skinny.c

@@ -4286,7 +4286,7 @@ static int get_input(struct skinnysession *s)
 		}
 		
 		dlen = letohl(*(int *)s->inbuf);
-		if (dlen < 0) {
+		if (dlen < 4) {
 			ast_log(LOG_WARNING, "Skinny Client sent invalid data.\n");
 			ast_mutex_unlock(&s->lock);
 			return -1;