From: Kangjie Lu <kjlu@xxxxxxx>
[ Upstream commit 46273cf7e009231d2b6bc10a926e82b8928a9fb2 ]
genlmsg_put could fail. The fix inserts a check of its return value, and
if it fails, returns -EMSGSIZE.
Signed-off-by: Kangjie Lu <kjlu@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/tipc/netlink_compat.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c
index d2bf92e711505..4f6fbd2f29add 100644
--- a/net/tipc/netlink_compat.c
+++ b/net/tipc/netlink_compat.c
@@ -926,6 +926,8 @@ static int tipc_nl_compat_publ_dump(struct tipc_nl_compat_msg *msg, u32 sock)
hdr = genlmsg_put(args, 0, 0, &tipc_genl_family, NLM_F_MULTI,
TIPC_NL_PUBL_GET);
+ if (!hdr)
+ return -EMSGSIZE;
nest = nla_nest_start(args, TIPC_NLA_SOCK);
if (!nest) {
--
2.20.1
