linux-kernel - [PATCH AUTOSEL 5.15 02/17] HID: uhid: Over-ride the default maximum data buffer value with our own

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230320005521.1428820-2-sashal@kernel.org>
Date:   Sun, 19 Mar 2023 20:55:04 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Lee Jones <lee@...nel.org>, Jiri Kosina <jkosina@...e.cz>,
        Sasha Levin <sashal@...nel.org>, david.rheinsberg@...il.com,
        jikos@...nel.org, benjamin.tissoires@...hat.com,
        linux-input@...r.kernel.org
Subject: [PATCH AUTOSEL 5.15 02/17] HID: uhid: Over-ride the default maximum data buffer value with our own

From: Lee Jones <lee@...nel.org>

[ Upstream commit 1c5d4221240a233df2440fe75c881465cdf8da07 ]

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@...nel.org>
Signed-off-by: Jiri Kosina <jkosina@...e.cz>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/hid/uhid.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
index fc06d8bb42e0f..ba0ca652b9dab 100644
--- a/drivers/hid/uhid.c
+++ b/drivers/hid/uhid.c
@@ -395,6 +395,7 @@ 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);
 
-- 
2.39.2