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| author | Ori Nimron <orinimron123@gmail.com> | 2019-09-20 09:35:49 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-09-24 16:37:18 +0200 |
| commit | 3a359798b176183ef09efb7a3dc59abad1cc7104 (patch) | |
| tree | a0d906192a23f75f300b533636d03bfb5b2af674 | |
| parent | e69dbd4619e7674c1679cba49afd9dd9ac347eef (diff) | |
| download | linux-stable-3a359798b176183ef09efb7a3dc59abad1cc7104.tar.gz linux-stable-3a359798b176183ef09efb7a3dc59abad1cc7104.tar.bz2 linux-stable-3a359798b176183ef09efb7a3dc59abad1cc7104.zip | |
nfc: enforce CAP_NET_RAW for raw sockets
When creating a raw AF_NFC socket, CAP_NET_RAW needs to be checked
first.
Signed-off-by: Ori Nimron <orinimron123@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/nfc/llcp_sock.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c index 9b8742947aff..8dfea26536c9 100644 --- a/net/nfc/llcp_sock.c +++ b/net/nfc/llcp_sock.c @@ -1004,10 +1004,13 @@ static int llcp_sock_create(struct net *net, struct socket *sock, sock->type != SOCK_RAW) return -ESOCKTNOSUPPORT; - if (sock->type == SOCK_RAW) + if (sock->type == SOCK_RAW) { + if (!capable(CAP_NET_RAW)) + return -EPERM; sock->ops = &llcp_rawsock_ops; - else + } else { sock->ops = &llcp_sock_ops; + } sk = nfc_llcp_sock_alloc(sock, sock->type, GFP_ATOMIC, kern); if (sk == NULL) |