Fix null pointer dereference in decttl().

Patch by Stephen Röttger.

Fix null pointer dereference in decttl().
Patch by Stephen Röttger.
42eb3c67 · Linus Nordberg · Linus Nordberg · eb436860 · 42eb3c67
Commit 42eb3c67 authored Jan 16, 2015 by Linus Nordberg Committed by Linus Nordberg Jan 16, 2015
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radsecproxy.c radsecproxy.c +3 -0

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--- 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--])