#syz test
there may be a read out of the bounds of rdesc.
this adds bounds checks
Signed-off-by: Andrew Ballance <andrewjballance@xxxxxxxxx>
---
drivers/hid/hid-asus.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index 02de2bf4f790..37e6d25593c2 100644
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -1204,8 +1204,8 @@ static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
}
/* match many more n-key devices */
- if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD) {
- for (int i = 0; i < *rsize + 1; i++) {
+ if (drvdata->quirks & QUIRK_ROG_NKEY_KEYBOARD && *rsize > 15) {
+ for (int i = 0; i < *rsize - 15; i++) {
/* offset to the count from 0x5a report part always 14 */
if (rdesc[i] == 0x85 && rdesc[i + 1] == 0x5a &&
rdesc[i + 14] == 0x95 && rdesc[i + 15] == 0x05) {
--
2.45.1
