From: Jiasheng Jiang Date: Tue, 17 May 2022 09:42:31 +0000 (+0800) Subject: net: af_key: add check for pfkey_broadcast in function pfkey_process X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4dc2a5a8f6754492180741facf2a8787f2c415d7;p=linux.git net: af_key: add check for pfkey_broadcast in function pfkey_process If skb_clone() returns null pointer, pfkey_broadcast() will return error. Therefore, it should be better to check the return value of pfkey_broadcast() and return error if fails. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Jiasheng Jiang Signed-off-by: Steffen Klassert --- diff --git a/net/key/af_key.c b/net/key/af_key.c index fd51db3be91c4..92e9d75dba2f4 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -2826,8 +2826,10 @@ static int pfkey_process(struct sock *sk, struct sk_buff *skb, const struct sadb void *ext_hdrs[SADB_EXT_MAX]; int err; - pfkey_broadcast(skb_clone(skb, GFP_KERNEL), GFP_KERNEL, - BROADCAST_PROMISC_ONLY, NULL, sock_net(sk)); + err = pfkey_broadcast(skb_clone(skb, GFP_KERNEL), GFP_KERNEL, + BROADCAST_PROMISC_ONLY, NULL, sock_net(sk)); + if (err) + return err; memset(ext_hdrs, 0, sizeof(ext_hdrs)); err = parse_exthdrs(skb, hdr, ext_hdrs);