From: Hans Dedecker <dedeckeh@gmail.com>
Date: Mon, 15 May 2017 15:42:52 +0000 (+0200)
Subject: config: limit ra_mtu to 65535
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=5683dd25da56c66e0a5c86e770b8ee2188ad569c;p=oweals%2Fodhcpd.git

config: limit ra_mtu to 65535

Limit the maximum ra_mtu to 65535

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
---

diff --git a/src/config.c b/src/config.c
index 979603c..fd334ef 100644
--- a/src/config.c
+++ b/src/config.c
@@ -621,9 +621,11 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
 	}
 
 	if ((c = tb[IFACE_ATTR_RA_MTU])) {
-		iface->ra_mtu = blobmsg_get_u32(c);
-		if (iface->ra_mtu < 1280)
+		uint32_t ra_mtu = blobmsg_get_u32(c);
+		if (ra_mtu < 1280 || ra_mtu > 65535)
 			goto err;
+
+		iface->ra_mtu = ra_mtu;
 	}
 
 	if ((c = tb[IFACE_ATTR_RA_OFFLINK]))