From: Donald Sharp <sharpd@cumulusnetworks.com>
Date: Thu, 11 May 2017 00:00:07 +0000 (-0400)
Subject: pimd: Prevent NULL dereference
X-Git-Tag: frr-4.0-dev~468^2~145
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=9403d28515c104ca04df390a1ae9fa6fd3ce0e42;p=mirror%2Ffrr.git

pimd: Prevent NULL dereference

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
---

diff --git a/pimd/pim_msg.c b/pimd/pim_msg.c
index 04f1f4846f..67faa39364 100644
--- a/pimd/pim_msg.c
+++ b/pimd/pim_msg.c
@@ -104,6 +104,9 @@ size_t pim_msg_get_jp_group_size(struct list *sources)
 	struct pim_jp_sources *js;
 	size_t size = 0;
 
+	if (!sources)
+		return 0;
+
 	size += sizeof(struct pim_encoded_group_ipv4);
 	size += 4; // Joined sources (2) + Pruned Sources (2)