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| author | Sasha Levin <sasha.levin@oracle.com> | 2015-03-23 22:30:00 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-24 19:50:39 +0300 |
| commit | 610600c8c5e25d551a010b64412cf731c084b1e1 (patch) | |
| tree | aa1e059d0a28f346d32e764c7720ff8126fc8f49 /net/tipc | |
| parent | 0117ec1970c5fa9c566045e7df8db76acc8f150e (diff) | |
| download | linux-610600c8c5e25d551a010b64412cf731c084b1e1.tar.xz | |
tipc: validate length of sockaddr in connect() for dgram/rdm
Commit f2f8036 ("tipc: add support for connect() on dgram/rdm sockets")
hasn't validated user input length for the sockaddr structure which allows
a user to overwrite kernel memory with arbitrary input.
Fixes: f2f8036 ("tipc: add support for connect() on dgram/rdm sockets")
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/socket.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 6dd5bd95236a..094710519477 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -1851,6 +1851,8 @@ static int tipc_connect(struct socket *sock, struct sockaddr *dest, if (dst->family == AF_UNSPEC) { memset(&tsk->remote, 0, sizeof(struct sockaddr_tipc)); tsk->connected = 0; + } else if (destlen != sizeof(struct sockaddr_tipc)) { + res = -EINVAL; } else { memcpy(&tsk->remote, dest, destlen); tsk->connected = 1; |