diff options
| author | Florian Westphal <fw@strlen.de> | 2016-02-24 19:20:17 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-02-26 01:04:48 +0300 |
| commit | 619b17452a388d6be69a7b28dc92310ea3f5aa65 (patch) | |
| tree | 4a93903e01d57de7fd532be2e2265b3f1b4ea60f /net/tipc/netlink_compat.c | |
| parent | d25a01257e422a4bdeb426f69529d57c73b235fe (diff) | |
| download | linux-619b17452a388d6be69a7b28dc92310ea3f5aa65.tar.xz | |
tipc: fix null deref crash in compat config path
msg.dst_sk needs to be set up with a valid socket because some callbacks
later derive the netns from it.
Fixes: 263ea09084d172d ("Revert "genl: Add genlmsg_new_unicast() for unicast message allocation")
Reported-by: Jon Maloy <maloy@donjonn.com>
Bisected-by: Jon Maloy <maloy@donjonn.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/netlink_compat.c')
| -rw-r--r-- | net/tipc/netlink_compat.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c index de66d8f945ed..d7d050f44fc1 100644 --- a/net/tipc/netlink_compat.c +++ b/net/tipc/netlink_compat.c @@ -1105,6 +1105,7 @@ static int tipc_nl_compat_recv(struct sk_buff *skb, struct genl_info *info) msg.req = nlmsg_data(req_nlh) + GENL_HDRLEN + TIPC_GENL_HDRLEN; msg.cmd = req_userhdr->cmd; msg.net = genl_info_net(info); + msg.dst_sk = skb->sk; if ((msg.cmd & 0xC000) && (!netlink_net_capable(skb, CAP_NET_ADMIN))) { msg.rep = tipc_get_err_tlv(TIPC_CFG_NOT_NET_ADMIN); |