[PATCH 5.7 320/393] net/nfc/rawsock.c: add CAP_NET_RAW check.
flat view
STALE2247d
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2020-08-17 18:45:09
Also in:
lkml
From: Qingyu Li <redacted> [ Upstream commit 26896f01467a28651f7a536143fe5ac8449d4041 ] When creating a raw AF_NFC socket, CAP_NET_RAW needs to be checked first. Signed-off-by: Qingyu Li <redacted> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/nfc/rawsock.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c@@ -332,10 +332,13 @@ static int rawsock_create(struct net *ne if ((sock->type != SOCK_SEQPACKET) && (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 = &rawsock_raw_ops; - else + } else { sock->ops = &rawsock_ops; + } sk = sk_alloc(net, PF_NFC, GFP_ATOMIC, nfc_proto->proto, kern); if (!sk)