From: Ori Nimron orinimron123@gmail.com
[ Upstream commit b91ee4aa2a2199ba4d4650706c272985a5a32d80 ]
When creating a raw AF_ISDN 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 --- drivers/isdn/mISDN/socket.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/isdn/mISDN/socket.c +++ b/drivers/isdn/mISDN/socket.c @@ -754,6 +754,8 @@ base_sock_create(struct net *net, struct
if (sock->type != SOCK_RAW) return -ESOCKTNOSUPPORT; + if (!capable(CAP_NET_RAW)) + return -EPERM;
sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern); if (!sk)