* [PATCH] Bluetooth: msft: fix null pointer deref on msft_monitor_device_evt
@ 2022-01-22 8:27 Soenke Huster
2022-01-22 9:04 ` bluez.test.bot
2022-01-22 21:39 ` [PATCH] " Marcel Holtmann
0 siblings, 2 replies; 3+ messages in thread
From: Soenke Huster @ 2022-01-22 8:27 UTC (permalink / raw)
To: Marcel Holtmann, Johan Hedberg, Luiz Augusto von Dentz,
David S. Miller, Jakub Kicinski
Cc: Soenke Huster, linux-bluetooth, netdev, linux-kernel
msft_find_handle_data returns NULL if it can't find the handle.
Therefore, handle_data must be checked, otherwise a null pointer
is dereferenced.
Signed-off-by: Soenke Huster <soenke.huster@eknoes.de>
---
net/bluetooth/msft.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/bluetooth/msft.c b/net/bluetooth/msft.c
index 484540855863..d2cf92e834f7 100644
--- a/net/bluetooth/msft.c
+++ b/net/bluetooth/msft.c
@@ -705,6 +705,9 @@ static void msft_monitor_device_evt(struct hci_dev *hdev, struct sk_buff *skb)
handle_data = msft_find_handle_data(hdev, ev->monitor_handle, false);
+ if (!handle_data)
+ return;
+
switch (ev->addr_type) {
case ADDR_LE_DEV_PUBLIC:
addr_type = BDADDR_LE_PUBLIC;
--
2.34.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* RE: Bluetooth: msft: fix null pointer deref on msft_monitor_device_evt
2022-01-22 8:27 [PATCH] Bluetooth: msft: fix null pointer deref on msft_monitor_device_evt Soenke Huster
@ 2022-01-22 9:04 ` bluez.test.bot
2022-01-22 21:39 ` [PATCH] " Marcel Holtmann
1 sibling, 0 replies; 3+ messages in thread
From: bluez.test.bot @ 2022-01-22 9:04 UTC (permalink / raw)
To: linux-bluetooth, soenke.huster
[-- Attachment #1: Type: text/plain, Size: 1097 bytes --]
This is automated email and please do not reply to this email!
Dear submitter,
Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=607456
---Test result---
Test Summary:
CheckPatch PASS 1.69 seconds
GitLint PASS 0.98 seconds
SubjectPrefix PASS 0.87 seconds
BuildKernel PASS 35.09 seconds
BuildKernel32 PASS 30.74 seconds
Incremental Build with patchesPASS 41.41 seconds
TestRunner: Setup PASS 540.82 seconds
TestRunner: l2cap-tester PASS 15.14 seconds
TestRunner: bnep-tester PASS 6.82 seconds
TestRunner: mgmt-tester PASS 115.33 seconds
TestRunner: rfcomm-tester PASS 8.59 seconds
TestRunner: sco-tester PASS 8.86 seconds
TestRunner: smp-tester PASS 8.68 seconds
TestRunner: userchan-tester PASS 7.10 seconds
---
Regards,
Linux Bluetooth
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] Bluetooth: msft: fix null pointer deref on msft_monitor_device_evt
2022-01-22 8:27 [PATCH] Bluetooth: msft: fix null pointer deref on msft_monitor_device_evt Soenke Huster
2022-01-22 9:04 ` bluez.test.bot
@ 2022-01-22 21:39 ` Marcel Holtmann
1 sibling, 0 replies; 3+ messages in thread
From: Marcel Holtmann @ 2022-01-22 21:39 UTC (permalink / raw)
To: Soenke Huster
Cc: Johan Hedberg, Luiz Augusto von Dentz, David S. Miller,
Jakub Kicinski, BlueZ, open list:NETWORKING [GENERAL],
linux-kernel
Hi Soenke,
> msft_find_handle_data returns NULL if it can't find the handle.
> Therefore, handle_data must be checked, otherwise a null pointer
> is dereferenced.
>
> Signed-off-by: Soenke Huster <soenke.huster@eknoes.de>
> ---
> net/bluetooth/msft.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/net/bluetooth/msft.c b/net/bluetooth/msft.c
> index 484540855863..d2cf92e834f7 100644
> --- a/net/bluetooth/msft.c
> +++ b/net/bluetooth/msft.c
> @@ -705,6 +705,9 @@ static void msft_monitor_device_evt(struct hci_dev *hdev, struct sk_buff *skb)
>
> handle_data = msft_find_handle_data(hdev, ev->monitor_handle, false);
>
scrap this empty line. The check can got right after the assignment.
> + if (!handle_data)
> + return;
> +
> switch (ev->addr_type) {
> case ADDR_LE_DEV_PUBLIC:
> addr_type = BDADDR_LE_PUBLIC;
Regards
Marcel
^ permalink raw reply [flat|nested] 3+ messages in thread
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2022-01-22 8:27 [PATCH] Bluetooth: msft: fix null pointer deref on msft_monitor_device_evt Soenke Huster
2022-01-22 9:04 ` bluez.test.bot
2022-01-22 21:39 ` [PATCH] " Marcel Holtmann
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