From: Kangjie Lu kjlu@umn.edu
[ 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 --- 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) {