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>,
Marcel Holtmann <marcel@holtmann.org>,
Sasha Levin <sashal@kernel.org>,
linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.10 127/137] Bluetooth: L2CAP: Fix invalid access on ECRED Connection response
Date: Tue, 6 Jul 2021 07:21:53 -0400 [thread overview]
Message-ID: <20210706112203.2062605-127-sashal@kernel.org> (raw)
In-Reply-To: <20210706112203.2062605-1-sashal@kernel.org>
From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
[ Upstream commit de895b43932cb47e69480540be7eca289af24f23 ]
The use of l2cap_chan_del is not safe under a loop using
list_for_each_entry.
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 17520133093a..0ddbc415ce15 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -6055,7 +6055,7 @@ static inline int l2cap_ecred_conn_rsp(struct l2cap_conn *conn,
struct l2cap_ecred_conn_rsp *rsp = (void *) data;
struct hci_conn *hcon = conn->hcon;
u16 mtu, mps, credits, result;
- struct l2cap_chan *chan;
+ struct l2cap_chan *chan, *tmp;
int err = 0, sec_level;
int i = 0;
@@ -6074,7 +6074,7 @@ static inline int l2cap_ecred_conn_rsp(struct l2cap_conn *conn,
cmd_len -= sizeof(*rsp);
- list_for_each_entry(chan, &conn->chan_l, list) {
+ list_for_each_entry_safe(chan, tmp, &conn->chan_l, list) {
u16 dcid;
if (chan->ident != cmd->ident ||
--
2.30.2
next prev parent reply other threads:[~2021-07-06 11:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210706112203.2062605-1-sashal@kernel.org>
2021-07-06 11:21 ` [PATCH AUTOSEL 5.10 121/137] Bluetooth: btusb: Fixed too many in-token issue for Mediatek Chip Sasha Levin
2021-07-06 11:21 ` [PATCH AUTOSEL 5.10 122/137] Bluetooth: Fix the HCI to MGMT status conversion table Sasha Levin
2021-07-06 11:21 ` [PATCH AUTOSEL 5.10 123/137] Bluetooth: Fix alt settings for incoming SCO with transparent coding format Sasha Levin
2021-07-06 11:21 ` [PATCH AUTOSEL 5.10 124/137] Bluetooth: Shutdown controller after workqueues are flushed or cancelled Sasha Levin
2021-07-06 11:21 ` [PATCH AUTOSEL 5.10 125/137] Bluetooth: btusb: Add a new QCA_ROME device (0cf3:e500) Sasha Levin
2021-07-06 11:21 ` [PATCH AUTOSEL 5.10 126/137] Bluetooth: L2CAP: Fix invalid access if ECRED Reconfigure fails Sasha Levin
2021-07-06 11:21 ` Sasha Levin [this message]
2021-07-06 11:21 ` [PATCH AUTOSEL 5.10 128/137] Bluetooth: btusb: Add support USB ALT 3 for WBS Sasha Levin
2021-07-06 11:21 ` [PATCH AUTOSEL 5.10 129/137] Bluetooth: mgmt: Fix the command returns garbage parameter value Sasha Levin
2021-07-06 11:21 ` [PATCH AUTOSEL 5.10 130/137] Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc Sasha Levin
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