Commit 6d98c426 authored Dec 26, 2018 by Kangjie Lu Committed by Greg Kroah-Hartman Dec 05, 2019

tipc: fix a missing check of genlmsg_put



[ 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@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent a3ab332b

net/tipc/netlink_compat.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -983,6 +983,8 @@ 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) {