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| author | Ori Nimron <orinimron123@gmail.com> | 2019-09-20 09:35:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-05 12:47:44 +0200 |
| commit | b6a2d6c11272b3cf5d2d902bb9aaf7558560a5eb (patch) | |
| tree | 48243842c9d46dc3823b8c23c314f5f2c194b50e /net | |
| parent | 70f80cb205649c7350617ca79515b98419e90475 (diff) | |
| download | linux-stable-b6a2d6c11272b3cf5d2d902bb9aaf7558560a5eb.tar.gz linux-stable-b6a2d6c11272b3cf5d2d902bb9aaf7558560a5eb.tar.bz2 linux-stable-b6a2d6c11272b3cf5d2d902bb9aaf7558560a5eb.zip | |
nfc: enforce CAP_NET_RAW for raw sockets
[ Upstream commit 3a359798b176183ef09efb7a3dc59abad1cc7104 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to '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 fb7afcaa3004..33ad7e25a89d 100644 --- a/net/nfc/llcp_sock.c +++ b/net/nfc/llcp_sock.c @@ -1012,10 +1012,13 @@ 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) |