Check for memset of zero

diff --git a/src/lib/radius.c b/src/lib/radius.c
index cb412c4..7c5a437 100644 (file)
--- a/src/lib/radius.c
+++ b/src/lib/radius.c
@@ -514,7 +514,7 @@ static void make_passwd(uint8_t *output, size_t *outlen,
        if (len > MAX_PASS_LEN) len = MAX_PASS_LEN;
 
        memcpy(passwd, input, len);
-       memset(passwd + len, 0, sizeof(passwd) - len);
+       if (len < sizeof(passwd)) memset(passwd + len, 0, sizeof(passwd) - len);
 
        if (len == 0) {
                len = AUTH_PASS_LEN;