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| author | Qingyu Li <ieatmuttonchuan@gmail.com> | 2020-08-10 09:51:00 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-08-11 10:34:30 -0700 |
| commit | 26896f01467a28651f7a536143fe5ac8449d4041 (patch) | |
| tree | a981d1f145678f3671286b30e77725f90822fbfd | |
| parent | 1dab5877e8ebb7a00fbf0e7d797c869aa37830b9 (diff) | |
| download | linux-stable-26896f01467a28651f7a536143fe5ac8449d4041.tar.gz linux-stable-26896f01467a28651f7a536143fe5ac8449d4041.tar.bz2 linux-stable-26896f01467a28651f7a536143fe5ac8449d4041.zip | |
net/nfc/rawsock.c: add CAP_NET_RAW check.
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>
| -rw-r--r-- | net/nfc/rawsock.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c index b2061b6746ea..955c195ae14b 100644 --- a/net/nfc/rawsock.c +++ b/net/nfc/rawsock.c @@ -328,10 +328,13 @@ 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) |