[ 3.5.yuz extended stable ] Patch "ALSA: hda - Always check array bounds in" has been added to staging queue
Herton Ronaldo Krzesinski
herton.krzesinski at canonical.com
Wed Nov 21 05:09:01 UTC 2012
This is a note to let you know that I have just added a patch titled
ALSA: hda - Always check array bounds in
to the linux-3.5.y-queue branch of the 3.5.yuz extended stable tree
which can be found at:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.5.yuz tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Herton
------
>From f4e17d92b3c0f6924c2eb2d6f6c465c2e0665669 Mon Sep 17 00:00:00 2001
From: David Henningsson <david.henningsson at canonical.com>
Date: Wed, 17 Oct 2012 12:43:44 +0200
Subject: [PATCH] ALSA: hda - Always check array bounds in
alc_get_line_out_pfx
commit 71aa5ebe36a4e936eff281b375a4707b6a8320f2 upstream.
Even when CONFIG_SND_DEBUG is not enabled, we don't want to
return an arbitrary memory location when the channel count is
larger than we expected.
Signed-off-by: David Henningsson <david.henningsson at canonical.com>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
---
sound/pci/hda/patch_realtek.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index f6784d7..2549f0b 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -2486,8 +2486,10 @@ static const char *alc_get_line_out_pfx(struct alc_spec *spec, int ch,
return "PCM";
break;
}
- if (snd_BUG_ON(ch >= ARRAY_SIZE(channel_name)))
+ if (ch >= ARRAY_SIZE(channel_name)) {
+ snd_BUG();
return "PCM";
+ }
return channel_name[ch];
}
--
1.7.9.5
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