linux-kernel - [PATCH v2] l2cap_core: automatically flushable packets aren't allowed on LE links

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

Date:	Wed, 19 Nov 2014 09:41:17 -0500
From:	Steven Walter <stevenrwalter@...il.com>
To:	marcel@...tmann.org, gustavo@...ovan.org, johan.hedberg@...il.com,
	linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Steven Walter <stevenrwalter@...il.com>
Subject: [PATCH v2] l2cap_core: automatically flushable packets aren't allowed on LE links

The bluetooth spec states that automatically flushable packets may not
be sent over a LE-U link.

Signed-off-by: Steven Walter <stevenrwalter@...il.com>
---
 net/bluetooth/l2cap_core.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 4af3821..028fcc6 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -764,7 +764,7 @@ static void l2cap_send_cmd(struct l2cap_conn *conn, u8 ident, u8 code, u16 len,
 	if (!skb)
 		return;
 
-	if (lmp_no_flush_capable(conn->hcon->hdev))
+	if (lmp_no_flush_capable(conn->hcon->hdev) || (conn->hcon->type == LE_LINK))
 		flags = ACL_START_NO_FLUSH;
 	else
 		flags = ACL_START;
@@ -798,8 +798,9 @@ static void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb)
 		return;
 	}
 
-	if (!test_bit(FLAG_FLUSHABLE, &chan->flags) &&
-	    lmp_no_flush_capable(hcon->hdev))
+	if ((hcon->type == LE_LINK) ||
+	    (!test_bit(FLAG_FLUSHABLE, &chan->flags) &&
+	    lmp_no_flush_capable(hcon->hdev)))
 		flags = ACL_START_NO_FLUSH;
 	else
 		flags = ACL_START;
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/