From ae3154aca9573e2f866d9b6253668db01c3f2488 Mon Sep 17 00:00:00 2001
From: Simon Kelley <simon@thekelleys.org.uk>
Date: Sun, 1 Jan 2017 22:59:46 +0000
Subject: [PATCH] Additional syntax check on MAC wildcards.

---
 src/util.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/util.c b/src/util.c
index c99eb0d..53b4579 100644
--- a/src/util.c
+++ b/src/util.c
@@ -497,6 +497,10 @@ int parse_hex(char *in, unsigned char *out, int maxlen,
 			  sav = in[(j+1)*2];
 			  in[(j+1)*2] = 0;
 			}
+		      /* checks above allow mix of hexdigit and *, which
+			 is illegal. */
+		      if (strchr(&in[j*2], '*'))
+			return -1;
 		      out[i] = strtol(&in[j*2], NULL, 16);
 		      mask = mask << 1;
 		      i++;