Fix null pointer dereference in decttl().

Patch by Stephen Röttger.
mariux64 · Jan 16, 2015 · 42eb3c6 · 42eb3c6
1 parent eb43686
commit 42eb3c6
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/radsecproxy.c b/radsecproxy.c
@@ -1173,6 +1173,9 @@ void addttlattr(struct radmsg *msg, uint32_t *attrtype, uint8_t addttl) {
 int decttl(uint8_t l, uint8_t *v) {
     int i;
 
+    if (l == 0)
+	return 0;
+
     i = l - 1;
     if (v[i]) {
 	if (--v[i--])