From dd98adf3e2b370d843d50a2cedc62fbbe6a1e91f Mon Sep 17 00:00:00 2001
From: Fernando ALVES <falves@alaloop.com>
Date: Sun, 25 Apr 2021 13:47:51 +0200
Subject: [PATCH] Buffer overflow on show sesion pppoe and on pppoe discover
 LOG level 3.

---
 util.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/util.c b/util.c
index ff6bf1e..1d512f4 100644
--- a/util.c
+++ b/util.c
@@ -31,7 +31,8 @@ char *fmtaddr(in_addr_t addr, int n)
 
 char *fmtMacAddr(uint8_t *pMacAddr)
 {
-	static char strMAC[2*ETH_ALEN];
+	// FF:FF:FF:FF:FF:FF (len(18)= 2*6 + 5 (:) + 1 (zero terminal))
+	static char strMAC[2*ETH_ALEN+6];
 
 	sprintf(strMAC, "%02X:%02X:%02X:%02X:%02X:%02X",
 			pMacAddr[0], pMacAddr[1], pMacAddr[2],