From 980415fffec6952602edac586eb8c3a7d3f50b43 Mon Sep 17 00:00:00 2001 From: Qingyu Li Date: Mon, 10 Aug 2020 09:51:00 +0800 Subject: net/nfc/rawsock.c: add CAP_NET_RAW check. [ Upstream commit 26896f01467a28651f7a536143fe5ac8449d4041 ] When creating a raw AF_NFC socket, CAP_NET_RAW needs to be checked first. Signed-off-by: Qingyu Li Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/nfc/rawsock.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'net') diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c index e2188deb08dc..b927730d9ab0 100644 --- a/net/nfc/rawsock.c +++ b/net/nfc/rawsock.c @@ -344,10 +344,13 @@ static int rawsock_create(struct net *net, struct socket *sock, 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) -- cgit v1.2.3