diff options
| author | Richard Alpe <[email protected]> | 2016-05-16 11:14:54 +0200 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2016-05-16 21:58:54 -0400 |
| commit | 45e093ae2830cd1264677d47ff9a95a71f5d9f9c (patch) | |
| tree | 72b47612fec35cff7626247e1e28c99715b31cbd | |
| parent | 77f57761466e9aef2b57acf8ce07df11bf360e34 (diff) | |
tipc: check nl sock before parsing nested attributes
Make sure the socket for which the user is listing publication exists
before parsing the socket netlink attributes.
Prior to this patch a call without any socket caused a NULL pointer
dereference in tipc_nl_publ_dump().
Tested-and-reported-by: Baozeng Ding <[email protected]>
Signed-off-by: Richard Alpe <[email protected]>
Acked-by: Jon Maloy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
| -rw-r--r-- | net/tipc/socket.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 12628890c219..3b7a79991d55 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -2853,6 +2853,9 @@ int tipc_nl_publ_dump(struct sk_buff *skb, struct netlink_callback *cb) if (err) return err; + if (!attrs[TIPC_NLA_SOCK]) + return -EINVAL; + err = nla_parse_nested(sock, TIPC_NLA_SOCK_MAX, attrs[TIPC_NLA_SOCK], tipc_nl_sock_policy); |