From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>,
Dan Carpenter <dan.carpenter@oracle.com>,
Marcel Holtmann <marcel@holtmann.org>,
Sasha Levin <sashal@kernel.org>,
linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.12 147/160] Bluetooth: L2CAP: Fix invalid access if ECRED Reconfigure fails
Date: Tue, 6 Jul 2021 07:18:13 -0400 [thread overview]
Message-ID: <20210706111827.2060499-147-sashal@kernel.org> (raw)
In-Reply-To: <20210706111827.2060499-1-sashal@kernel.org>
From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
[ Upstream commit 1fa20d7d4aad02206e84b74915819fbe9f81dab3 ]
The use of l2cap_chan_del is not safe under a loop using
list_for_each_entry.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/l2cap_core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 53ddbee459b9..015f9ecadd0a 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -6244,7 +6244,7 @@ static inline int l2cap_ecred_reconf_rsp(struct l2cap_conn *conn,
struct l2cap_cmd_hdr *cmd, u16 cmd_len,
u8 *data)
{
- struct l2cap_chan *chan;
+ struct l2cap_chan *chan, *tmp;
struct l2cap_ecred_conn_rsp *rsp = (void *) data;
u16 result;
@@ -6258,7 +6258,7 @@ static inline int l2cap_ecred_reconf_rsp(struct l2cap_conn *conn,
if (!result)
return 0;
- list_for_each_entry(chan, &conn->chan_l, list) {
+ list_for_each_entry_safe(chan, tmp, &conn->chan_l, list) {
if (chan->ident != cmd->ident)
continue;
--
2.30.2
next prev parent reply other threads:[~2021-07-06 11:34 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210706111827.2060499-1-sashal@kernel.org>
2021-07-06 11:18 ` [PATCH AUTOSEL 5.12 142/160] Bluetooth: btusb: Fixed too many in-token issue for Mediatek Chip Sasha Levin
2021-07-06 11:18 ` [PATCH AUTOSEL 5.12 143/160] Bluetooth: Fix the HCI to MGMT status conversion table Sasha Levin
2021-07-06 11:18 ` [PATCH AUTOSEL 5.12 144/160] Bluetooth: Fix alt settings for incoming SCO with transparent coding format Sasha Levin
2021-07-06 11:18 ` [PATCH AUTOSEL 5.12 145/160] Bluetooth: Shutdown controller after workqueues are flushed or cancelled Sasha Levin
2021-07-06 11:18 ` [PATCH AUTOSEL 5.12 146/160] Bluetooth: btusb: Add a new QCA_ROME device (0cf3:e500) Sasha Levin
2021-07-06 11:18 ` Sasha Levin [this message]
2021-07-06 11:18 ` [PATCH AUTOSEL 5.12 148/160] Bluetooth: L2CAP: Fix invalid access on ECRED Connection response Sasha Levin
2021-07-06 11:18 ` [PATCH AUTOSEL 5.12 149/160] Bluetooth: btusb: Add support USB ALT 3 for WBS Sasha Levin
2021-07-06 11:18 ` [PATCH AUTOSEL 5.12 150/160] Bluetooth: mgmt: Fix the command returns garbage parameter value Sasha Levin
2021-07-06 11:18 ` [PATCH AUTOSEL 5.12 151/160] Bluetooth: btusb: use default nvm if boardID is 0 for wcn6855 Sasha Levin
2021-07-06 11:18 ` [PATCH AUTOSEL 5.12 152/160] Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc Sasha Levin
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