[PATCH 1/1] api: add missing cookie checks for network access

[Heinrich Schuchardt]

dev_write_net() and dev_read_net() should validate the provided cookie.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
---
 api/api_net.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/api/api_net.c b/api/api_net.c
index 7515c26e8b4..0b931a80787 100644
--- a/api/api_net.c
+++ b/api/api_net.c
@@ -72,14 +72,16 @@ int dev_enum_net(struct device_info *di)
 
 int dev_write_net(void *cookie, void *buf, int len)
 {
-	/* XXX verify that cookie points to a valid net device??? */
+	if (!dev_valid_net(cookie))
+		return API_ENODEV;
 
 	return eth_send(buf, len);
 }
 
 int dev_read_net(void *cookie, void *buf, int len)
 {
-	/* XXX verify that cookie points to a valid net device??? */
+	if (!dev_valid_net(cookie))
+		return API_ENODEV;
 
 	return eth_receive(buf, len);
 }
-- 
2.43.0