[PATCH 14/14] HID: check for NULL field when setting values
From: Jiri Kosina <hidden>
Date: 2013-08-28 20:32:04
Subsystem:
hid core layer, the rest · Maintainers:
Jiri Kosina, Benjamin Tissoires, Linus Torvalds
From: Kees Cook <redacted> Defensively check that the field to be worked on is not NULL. Signed-off-by: Kees Cook <redacted> Cc: stable@kernel.org --- drivers/hid/hid-core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 55798b2..192be6b 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c@@ -1206,7 +1206,12 @@ EXPORT_SYMBOL_GPL(hid_output_report); int hid_set_field(struct hid_field *field, unsigned offset, __s32 value) { - unsigned size = field->report_size; + unsigned size; + + if (!field) + return -1; + + size = field->report_size; hid_dump_input(field->report->device, field->usage + offset, value);
--
Jiri Kosina
SUSE Labs