提交 be67b68d 编写于 作者: K Kees Cook 提交者: Jiri Kosina

HID: check for NULL field when setting values

Defensively check that the field to be worked on is not NULL.
Signed-off-by: NKees Cook <keescook@chromium.org>
Cc: stable@kernel.org
Signed-off-by: NJiri Kosina <jkosina@suse.cz>
上级 1e87a245
......@@ -1169,7 +1169,12 @@ EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
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);
......
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