[PATCH v2 5/7] grub-core/net/net.c: Fix uninitialized scalar variable

[Alec Brown]

In the function grub_net_ipv6_get_link_local(), grub_net_network_level_address_t
addr is called but isn't being initialized. This results in the member
grub_dns_option_t option being filled with junk data from the stack. We can
prevent this by setting the option member in addr to 0.

Fixes: CID 375033

Signed-off-by: Alec Brown <alec.r.brown@oracle.com>
---
 grub-core/net/net.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/grub-core/net/net.c b/grub-core/net/net.c
index 4d3eb5c1a..b6eb1f951 100644
--- a/grub-core/net/net.c
+++ b/grub-core/net/net.c
@@ -292,6 +292,7 @@ grub_net_ipv6_get_link_local (struct grub_net_card *card,
   addr.type = GRUB_NET_NETWORK_LEVEL_PROTOCOL_IPV6;
   addr.ipv6[0] = grub_cpu_to_be64_compile_time (0xfe80ULL << 48);
   addr.ipv6[1] = grub_net_ipv6_get_id (hwaddr);
+  addr.option = 0;
 
   FOR_NET_NETWORK_LEVEL_INTERFACES (inf)
   {
-- 
2.27.0