diff options
| author | Todd Brandt <todd.e.brandt@intel.com> | 2023-03-14 11:12:56 -0700 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2023-03-24 14:09:29 +0100 |
| commit | 7c3650a8007c43bc1a60d8bdb4cdbea3ad9a7dd4 (patch) | |
| tree | 0991968f95b5d54392de0cdaef69bd4c9b014790 /drivers/hid | |
| parent | dbf56d2fb53b7397002219bd221cfc72aadfdc82 (diff) | |
HID: hid-sensor-custom: Fix buffer overrun in device name
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>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-sensor-custom.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; |