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net: af_key: add check for pfkey_broadcast in function pfkey_process
author
Jiasheng Jiang
<jiasheng@iscas.ac.cn>
Tue, 17 May 2022 09:42:31 +0000
(17:42 +0800)
committer
Steffen Klassert
<steffen.klassert@secunet.com>
Wed, 18 May 2022 07:23:54 +0000
(09:23 +0200)
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 <jiasheng@iscas.ac.cn>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
net/key/af_key.c
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diff --git
a/net/key/af_key.c
b/net/key/af_key.c
index
fd51db3
..
92e9d75
100644
(file)
--- 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);