1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/hid/hid-cypress.c b/drivers/hid/hid-cypress.c
index 1b764d1745f3..1689568b597d 100644
--- a/drivers/hid/hid-cypress.c
+++ b/drivers/hid/hid-cypress.c
@@ -39,6 +39,9 @@ static __u8 *cp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
         if (!(quirks & CP_RDESC_SWAPPED_MIN_MAX))
                 return rdesc;
 
+        if (*rsize < 4)
+                return rdesc;
+
         for (i = 0; i < *rsize - 4; i++)
                 if (rdesc[i] == 0x29 && rdesc[i + 2] == 0x19) {
                         rdesc[i] = 0x19;