GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-04-25 15:43:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

tipc: add a bounds check in link_recv_changeover_msg()

Browse source 
The bearer_id here comes from skb->data and it can be a number from 0 to
7.  The problem is that the ->links[] array has only 2 elements so I
have added a range check.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2013-05-06 08:28:41 +00:00 • committed by David S. Miller
parent ac718b6930
commit cb4b102f0a
1 changed files with 4 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
net/tipc/link.c
View file

@ -2306,8 +2306,11 @@ static int link_recv_changeover_msg(struct tipc_link **l_ptr,
struct tipc_msg *tunnel_msg = buf_msg(tunnel_buf); struct tipc_msg *tunnel_msg = buf_msg(tunnel_buf);
u32 msg_typ = msg_type(tunnel_msg); u32 msg_typ = msg_type(tunnel_msg);
u32 msg_count = msg_msgcnt(tunnel_msg); u32 msg_count = msg_msgcnt(tunnel_msg);
u32 bearer_id = msg_bearer_id(tunnel_msg);
dest_link = (*l_ptr)->owner->links[msg_bearer_id(tunnel_msg)]; if (bearer_id >= MAX_BEARERS)
goto exit;
dest_link = (*l_ptr)->owner->links[bearer_id];
if (!dest_link) if (!dest_link)
goto exit; goto exit;
if (dest_link == *l_ptr) { if (dest_link == *l_ptr) {