netdev - [PATCH] net/bluetooth/hidp/sock.c: add CAP_NET

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 18 Aug 2020 16:21:03 +0800
From:   Qingyu Li <ieatmuttonchuan@...il.com>
To:     marcel@...tmann.org, johan.hedberg@...il.com, davem@...emloft.net,
        kuba@...nel.org
Cc:     linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] net/bluetooth/hidp/sock.c: add CAP_NET_RAW check.

When creating a raw PF_BLUETOOTH socket,
CAP_NET_RAW needs to be checked first.

Signed-off-by: Qingyu Li <ieatmuttonchuan@...il.com>
---
 net/bluetooth/hidp/sock.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/bluetooth/hidp/sock.c b/net/bluetooth/hidp/sock.c
index 595fb3c9d6c3..3dd9c8e0419a 100644
--- a/net/bluetooth/hidp/sock.c
+++ b/net/bluetooth/hidp/sock.c
@@ -255,6 +255,9 @@ static int hidp_sock_create(struct net *net, struct socket *sock, int protocol,
 	if (sock->type != SOCK_RAW)
 		return -ESOCKTNOSUPPORT;

+	if (!capable(CAP_NET_RAW))
+		return -EPERM;
+
 	sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hidp_proto, kern);
 	if (!sk)
 		return -ENOMEM;
--
2.17.1