From: <gregkh@linuxfoundation.org>
To: christophe.jaillet@wanadoo.fr, gregkh@linuxfoundation.org, tiwai@suse.de
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "ALSA: echoaudio: Fix memory allocation" has been added to the 4.6-stable tree
Date: Sun, 24 Jul 2016 17:30:59 -0700 [thread overview]
Message-ID: <1469406659116178@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
ALSA: echoaudio: Fix memory allocation
to the 4.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-echoaudio-fix-memory-allocation.patch
and it can be found in the queue-4.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 9c6795a9b3cbb56a9fbfaf43909c5c22999ba317 Mon Sep 17 00:00:00 2001
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Mon, 27 Jun 2016 21:06:51 +0200
Subject: ALSA: echoaudio: Fix memory allocation
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
commit 9c6795a9b3cbb56a9fbfaf43909c5c22999ba317 upstream.
'commpage_bak' is allocated with 'sizeof(struct echoaudio)' bytes.
We then copy 'sizeof(struct comm_page)' bytes in it.
On my system, smatch complains because one is 2960 and the other is 3072.
This would result in memory corruption or a oops.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
sound/pci/echoaudio/echoaudio.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -2200,11 +2200,11 @@ static int snd_echo_resume(struct device
u32 pipe_alloc_mask;
int err;
- commpage_bak = kmalloc(sizeof(struct echoaudio), GFP_KERNEL);
+ commpage_bak = kmalloc(sizeof(*commpage), GFP_KERNEL);
if (commpage_bak == NULL)
return -ENOMEM;
commpage = chip->comm_page;
- memcpy(commpage_bak, commpage, sizeof(struct comm_page));
+ memcpy(commpage_bak, commpage, sizeof(*commpage));
err = init_hw(chip, chip->pci->device, chip->pci->subsystem_device);
if (err < 0) {
Patches currently in stable-queue which might be from christophe.jaillet@wanadoo.fr are
queue-4.6/alsa-echoaudio-fix-memory-allocation.patch
reply other threads:[~2016-07-25 0:30 UTC|newest]
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