From: Lee Jones <lee@kernel.org>
Date: Mon, 20 Mar 2023 13:09:23 +0000 (+0000)
Subject: HID: uhid: Over-ride the default maximum data buffer value with our own
X-Git-Tag: v4.14.311~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=687993c9b65de54e6483701467067a1f3b0d7e9d;p=thirdparty%2Fkernel%2Fstable.git

HID: uhid: Over-ride the default maximum data buffer value with our own

commit 1c5d4221240a233df2440fe75c881465cdf8da07 upstream.

The default maximum data buffer size for this interface is UHID_DATA_MAX
(4k).  When data buffers are being processed, ensure this value is used
when ensuring the sanity, rather than a value between the user provided
value and HID_MAX_BUFFER_SIZE (16k).

Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
index 333b6a769189c..b7efc5c055be1 100644
--- a/drivers/hid/uhid.c
+++ b/drivers/hid/uhid.c
@@ -399,6 +399,7 @@ struct hid_ll_driver uhid_hid_driver = {
 	.parse = uhid_hid_parse,
 	.raw_request = uhid_hid_raw_request,
 	.output_report = uhid_hid_output_report,
+	.max_buffer_size = UHID_DATA_MAX,
 };
 EXPORT_SYMBOL_GPL(uhid_hid_driver);