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-next>] [day] [month] [year] [list]
Date: Thu, 25 Jan 2024 21:28:45 +0800
From: <nini.song@...iatek.com>
To: <nini.song@...iatek.com>
CC: <ci.wu@...iatek.com>, <mchehab@...nel.org>, <nicolas@...sle.eu>,
	<linux-media@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-mediatek@...ts.infradead.org>, Hans Verkuil
	<hverkuil-cisco@...all.nl>, Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, "Jani
 Nikula" <jani.nikula@...el.com>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] media: cec: core: remove length check of Timer Status

From: "nini.song" <nini.song@...iatek.com>

The valid_la is used to check the length requirements,
including special cases of Timer Status. If the length is
shorter than 5, that means no Duration Available is returned,
the message will be forced to be invalid.

However, the description of Duration Available in the spec
is that this parameter may be returned when these cases, or
that it can be optionally return when these cases. The key
words in the spec description are flexible choices.

Remove the special length check of Timer Status to fit the
spec which is not compulsory about that.

Signed-off-by: Nini Song <nini.song@...iatek.com>
---
 drivers/media/cec/core/cec-adap.c | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/drivers/media/cec/core/cec-adap.c b/drivers/media/cec/core/cec-adap.c
index 5741adf09a2e..559a172ebc6c 100644
--- a/drivers/media/cec/core/cec-adap.c
+++ b/drivers/media/cec/core/cec-adap.c
@@ -1151,20 +1151,6 @@ void cec_received_msg_ts(struct cec_adapter *adap,
 	if (valid_la && min_len) {
 		/* These messages have special length requirements */
 		switch (cmd) {
-		case CEC_MSG_TIMER_STATUS:
-			if (msg->msg[2] & 0x10) {
-				switch (msg->msg[2] & 0xf) {
-				case CEC_OP_PROG_INFO_NOT_ENOUGH_SPACE:
-				case CEC_OP_PROG_INFO_MIGHT_NOT_BE_ENOUGH_SPACE:
-					if (msg->len < 5)
-						valid_la = false;
-					break;
-				}
-			} else if ((msg->msg[2] & 0xf) == CEC_OP_PROG_ERROR_DUPLICATE) {
-				if (msg->len < 5)
-					valid_la = false;
-			}
-			break;
 		case CEC_MSG_RECORD_ON:
 			switch (msg->msg[2]) {
 			case CEC_OP_RECORD_SRC_OWN:
-- 
2.18.0


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ