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From: Dan Carpenter <dan.carpenter@oracle.com>
To: Clemens Ladisch <clemens@ladisch.de>,
	Takashi Sakamoto <o-takashi@sakamocchi.jp>
Cc: alsa-devel@alsa-project.org, kernel-janitors@vger.kernel.org,
	Takashi Iwai <tiwai@suse.com>
Subject: [PATCH] ALSA: fireface: Off by one in latter_handle_midi_msg()
Date: Fri, 25 Jan 2019 15:44:18 +0300	[thread overview]
Message-ID: <20190125124418.GA21947@kadam> (raw)

The > should be >= or otherwise we potentially read one element beyond
the end of the ff->tx_midi_substreams[] array.

Fixes: 73f5537fb209 ("ALSA: fireface: support tx MIDI functionality of Fireface UCX")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 sound/firewire/fireface/ff-protocol-latter.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/firewire/fireface/ff-protocol-latter.c b/sound/firewire/fireface/ff-protocol-latter.c
index 817af4447349..438aeed9a1ab 100644
--- a/sound/firewire/fireface/ff-protocol-latter.c
+++ b/sound/firewire/fireface/ff-protocol-latter.c
@@ -275,7 +275,7 @@ static void latter_handle_midi_msg(struct snd_ff *ff, unsigned int offset,
 	struct snd_rawmidi_substream *substream;
 	unsigned int len;
 
-	if (index > ff->spec->midi_in_ports)
+	if (index >= ff->spec->midi_in_ports)
 		return;
 
 	switch (data & 0x0000000f) {
-- 
2.17.1

WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Clemens Ladisch <clemens@ladisch.de>,
	Takashi Sakamoto <o-takashi@sakamocchi.jp>
Cc: alsa-devel@alsa-project.org, kernel-janitors@vger.kernel.org,
	Takashi Iwai <tiwai@suse.com>
Subject: [PATCH] ALSA: fireface: Off by one in latter_handle_midi_msg()
Date: Fri, 25 Jan 2019 12:44:18 +0000	[thread overview]
Message-ID: <20190125124418.GA21947@kadam> (raw)

The > should be >= or otherwise we potentially read one element beyond
the end of the ff->tx_midi_substreams[] array.

Fixes: 73f5537fb209 ("ALSA: fireface: support tx MIDI functionality of Fireface UCX")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 sound/firewire/fireface/ff-protocol-latter.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/firewire/fireface/ff-protocol-latter.c b/sound/firewire/fireface/ff-protocol-latter.c
index 817af4447349..438aeed9a1ab 100644
--- a/sound/firewire/fireface/ff-protocol-latter.c
+++ b/sound/firewire/fireface/ff-protocol-latter.c
@@ -275,7 +275,7 @@ static void latter_handle_midi_msg(struct snd_ff *ff, unsigned int offset,
 	struct snd_rawmidi_substream *substream;
 	unsigned int len;
 
-	if (index > ff->spec->midi_in_ports)
+	if (index >= ff->spec->midi_in_ports)
 		return;
 
 	switch (data & 0x0000000f) {
-- 
2.17.1

             reply	other threads:[~2019-01-25 12:44 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-25 12:44 Dan Carpenter [this message]
2019-01-25 12:44 ` [PATCH] ALSA: fireface: Off by one in latter_handle_midi_msg() Dan Carpenter
2019-01-25 13:41 ` Takashi Sakamoto
2019-01-25 13:41   ` Takashi Sakamoto
2019-01-25 14:52   ` Takashi Iwai
2019-01-25 14:52     ` Takashi Iwai

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