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authorQingyu Li <ieatmuttonchuan@gmail.com>2020-08-10 09:51:00 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-08-19 08:16:22 +0200
commit0b305f259ca9b85c48f9cb3159d034b7328ed225 (patch)
treea3c4c1e8c2c1ecf0f6a728cfc7fc9d2901c23614 /net/nfc
parent02618095ab45aa6797d6ffb8396a131ada7f8a86 (diff)
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 <ieatmuttonchuan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/nfc')
-rw-r--r--net/nfc/rawsock.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index ba5ffd3badd3..b5c867fe3232 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -332,10 +332,13 @@ 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)