From 69d9a07e34cc6c41845cc0f7972c83f12168bfd9 Mon Sep 17 00:00:00 2001
From: Andrew Zaborowski <andrew.zaborowski@intel.com>
Date: Fri, 4 Jun 2021 03:50:42 +0200
Subject: [PATCH] p2putil: Ensure non-negative index in p2p_get_random_string

---
 src/p2putil.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/p2putil.c b/src/p2putil.c
index 6ea18b74..5313b34c 100644
--- a/src/p2putil.c
+++ b/src/p2putil.c
@@ -2637,7 +2637,7 @@ void p2p_get_random_string(char *buf, size_t len)
 	l_getrandom(buf, len);
 
 	while (len) {
-		int index = *buf % set_size;
+		int index = (uint8_t) *buf % set_size;
 
 		*buf++ = CHARSET[index];
 		len--;