* [PATCH v4] HID:hid-sensor-custom: Fix buffer overrun in device name
@ 2023-03-14 18:12 Todd Brandt
2023-03-14 18:18 ` srinivas pandruvada
2023-03-24 13:10 ` Jiri Kosina
0 siblings, 2 replies; 3+ messages in thread
From: Todd Brandt @ 2023-03-14 18:12 UTC (permalink / raw)
To: linux-input, linux-iio, linux-kernel
Cc: todd.e.brandt, todd.e.brandt, srinivas.pandruvada, jic23, jikos,
p.jungkamp, stable
On some platforms there are some platform devices created with
invalid names. For example: "HID-SENSOR-INT-020b?.39.auto" instead
of "HID-SENSOR-INT-020b.39.auto"
This string include some invalid characters, hence it will fail to
properly load the driver which will handle this custom sensor. Also
it is a problem for some user space tools, which parses the device
names from ftrace and dmesg.
This is because the string, real_usage, is not NULL terminated and
printed with %s to form device name.
To address this, initialize the real_usage string with 0s.
Reported-and-tested-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217169
Fixes: 98c062e82451 ("HID: hid-sensor-custom: Allow more custom iio sensors")
Cc: stable@vger.kernel.org
Suggested-by: Philipp Jungkamp <p.jungkamp@gmx.net>
Signed-off-by: Philipp Jungkamp <p.jungkamp@gmx.net>
Signed-off-by: Todd Brandt <todd.e.brandt@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
Changes in v4:
- add the Fixes line
- add patch version change list
Changes in v3:
- update the changelog
- add proper reviewed/signed/suggested links
Changes in v2:
- update the changelog
drivers/hid/hid-sensor-custom.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hid/hid-sensor-custom.c b/drivers/hid/hid-sensor-custom.c
index 3e3f89e01d81..d85398721659 100644
--- a/drivers/hid/hid-sensor-custom.c
+++ b/drivers/hid/hid-sensor-custom.c
@@ -940,7 +940,7 @@ hid_sensor_register_platform_device(struct platform_device *pdev,
struct hid_sensor_hub_device *hsdev,
const struct hid_sensor_custom_match *match)
{
- char real_usage[HID_SENSOR_USAGE_LENGTH];
+ char real_usage[HID_SENSOR_USAGE_LENGTH] = { 0 };
struct platform_device *custom_pdev;
const char *dev_name;
char *c;
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v4] HID:hid-sensor-custom: Fix buffer overrun in device name
2023-03-14 18:12 [PATCH v4] HID:hid-sensor-custom: Fix buffer overrun in device name Todd Brandt
@ 2023-03-14 18:18 ` srinivas pandruvada
2023-03-24 13:10 ` Jiri Kosina
1 sibling, 0 replies; 3+ messages in thread
From: srinivas pandruvada @ 2023-03-14 18:18 UTC (permalink / raw)
To: Todd Brandt, linux-input, linux-iio, linux-kernel
Cc: todd.e.brandt, jic23, jikos, p.jungkamp, stable
On Tue, 2023-03-14 at 11:12 -0700, Todd Brandt wrote:
> On some platforms there are some platform devices created with
> invalid names. For example: "HID-SENSOR-INT-020b?.39.auto" instead
> of "HID-SENSOR-INT-020b.39.auto"
>
> This string include some invalid characters, hence it will fail to
> properly load the driver which will handle this custom sensor. Also
> it is a problem for some user space tools, which parses the device
> names from ftrace and dmesg.
>
> This is because the string, real_usage, is not NULL terminated and
> printed with %s to form device name.
>
> To address this, initialize the real_usage string with 0s.
>
> Reported-and-tested-by: Todd Brandt <todd.e.brandt@linux.intel.com>
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=217169
> Fixes: 98c062e82451 ("HID: hid-sensor-custom: Allow more custom iio
> sensors")
> Cc: stable@vger.kernel.org
> Suggested-by: Philipp Jungkamp <p.jungkamp@gmx.net>
> Signed-off-by: Philipp Jungkamp <p.jungkamp@gmx.net>
> Signed-off-by: Todd Brandt <todd.e.brandt@intel.com>
> Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
> ---
> Changes in v4:
> - add the Fixes line
> - add patch version change list
> Changes in v3:
> - update the changelog
> - add proper reviewed/signed/suggested links
> Changes in v2:
> - update the changelog
>
> drivers/hid/hid-sensor-custom.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/hid/hid-sensor-custom.c b/drivers/hid/hid-
> sensor-custom.c
> index 3e3f89e01d81..d85398721659 100644
> --- a/drivers/hid/hid-sensor-custom.c
> +++ b/drivers/hid/hid-sensor-custom.c
> @@ -940,7 +940,7 @@ hid_sensor_register_platform_device(struct
> platform_device *pdev,
> struct hid_sensor_hub_device
> *hsdev,
> const struct
> hid_sensor_custom_match *match)
> {
> - char real_usage[HID_SENSOR_USAGE_LENGTH];
> + char real_usage[HID_SENSOR_USAGE_LENGTH] = { 0 };
> struct platform_device *custom_pdev;
> const char *dev_name;
> char *c;
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v4] HID:hid-sensor-custom: Fix buffer overrun in device name
2023-03-14 18:12 [PATCH v4] HID:hid-sensor-custom: Fix buffer overrun in device name Todd Brandt
2023-03-14 18:18 ` srinivas pandruvada
@ 2023-03-24 13:10 ` Jiri Kosina
1 sibling, 0 replies; 3+ messages in thread
From: Jiri Kosina @ 2023-03-24 13:10 UTC (permalink / raw)
To: Todd Brandt
Cc: linux-input, linux-iio, linux-kernel, todd.e.brandt,
srinivas.pandruvada, jic23, p.jungkamp, stable
On Tue, 14 Mar 2023, Todd Brandt wrote:
> On some platforms there are some platform devices created with
> invalid names. For example: "HID-SENSOR-INT-020b?.39.auto" instead
> of "HID-SENSOR-INT-020b.39.auto"
>
> This string include some invalid characters, hence it will fail to
> properly load the driver which will handle this custom sensor. Also
> it is a problem for some user space tools, which parses the device
> names from ftrace and dmesg.
>
> This is because the string, real_usage, is not NULL terminated and
> printed with %s to form device name.
>
> To address this, initialize the real_usage string with 0s.
>
> Reported-and-tested-by: Todd Brandt <todd.e.brandt@linux.intel.com>
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=217169
> Fixes: 98c062e82451 ("HID: hid-sensor-custom: Allow more custom iio sensors")
> Cc: stable@vger.kernel.org
> Suggested-by: Philipp Jungkamp <p.jungkamp@gmx.net>
> Signed-off-by: Philipp Jungkamp <p.jungkamp@gmx.net>
> Signed-off-by: Todd Brandt <todd.e.brandt@intel.com>
> Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> ---
> Changes in v4:
> - add the Fixes line
> - add patch version change list
> Changes in v3:
> - update the changelog
> - add proper reviewed/signed/suggested links
> Changes in v2:
> - update the changelog
Applied to for-6.3/upstream-fixes, thanks.
--
Jiri Kosina
SUSE Labs
^ permalink raw reply [flat|nested] 3+ messages in thread
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2023-03-14 18:12 [PATCH v4] HID:hid-sensor-custom: Fix buffer overrun in device name Todd Brandt
2023-03-14 18:18 ` srinivas pandruvada
2023-03-24 13:10 ` Jiri Kosina
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