From: Kangjie Lu Date: Wed, 26 Dec 2018 06:09:04 +0000 (-0600) Subject: tipc: fix a missing check of genlmsg_put X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=709f50b180528ad1e89d9a8ad59cc81a85937bb8;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git 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 Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c index 1c8ac0c11008..91d51a595ac2 100644 --- a/net/tipc/netlink_compat.c +++ b/net/tipc/netlink_compat.c @@ -974,6 +974,8 @@ 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) {