[PATCH] HID: mcp2221: fix slab out-of-bounds in mcp2221_raw_event

[Atharv Dubey]

Fixes an out-of-bounds read triggered by malformed HID input reports.

Fixes: 3a8660878839 ("HID: mcp2221: add support for MCP2221 HID adapter")
Reported-by: syzbot+1018672fe70298606e5f@xxxxxxxxxxxxxxxxxxxxxxxxx
Closes: https://syzkaller.appspot.com/bug?extid=1018672fe70298606e5f
Signed-off-by: Atharv Dubey <atharvd440@xxxxxxxxx>
---
 drivers/hid/hid-mcp2221.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-mcp2221.c b/drivers/hid/hid-mcp2221.c
index a9fd7648515d..c97f0acbac8b 100644
--- a/drivers/hid/hid-mcp2221.c
+++ b/drivers/hid/hid-mcp2221.c
@@ -945,7 +945,7 @@ static int mcp2221_raw_event(struct hid_device *hdev,
 		switch (data[1]) {
 		case MCP2221_SUCCESS:
 			if ((data[mcp->gp_idx] == MCP2221_ALT_F_NOT_GPIOV) ||
-				(mcp->gp_idx > 0 &&data[mcp->gp_idx - 1] == MCP2221_ALT_F_NOT_GPIOV)) {
+				(mcp->gp_idx > 0 && data[mcp->gp_idx - 1] == MCP2221_ALT_F_NOT_GPIOV)) {
 				mcp->status = -ENOENT;
 			} else {
 				mcp->status = 0;
-- 
2.43.0