| 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
| ||
|
Message-Id: <20221206095112.987799-1-sashal@kernel.org>
Date: Tue, 6 Dec 2022 04:51:07 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Mark Brown <broonie@...nel.org>, Sasha Levin <sashal@...nel.org>,
lgirdwood@...il.com, perex@...ex.cz, tiwai@...e.com,
alsa-devel@...a-project.org
Subject: [PATCH AUTOSEL 4.19 1/5] ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx()
From: Mark Brown <broonie@...nel.org>
[ Upstream commit 97eea946b93961fffd29448dcda7398d0d51c4b2 ]
The bounds checks in snd_soc_put_volsw_sx() are only being applied to the
first channel, meaning it is possible to write out of bounds values to the
second channel in stereo controls. Add appropriate checks.
Signed-off-by: Mark Brown <broonie@...nel.org>
Link: https://lore.kernel.org/r/20220511134137.169575-2-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
sound/soc/soc-ops.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c
index 453b61b42dd9..00e6a6e46fe5 100644
--- a/sound/soc/soc-ops.c
+++ b/sound/soc/soc-ops.c
@@ -460,6 +460,12 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
if (snd_soc_volsw_is_stereo(mc)) {
val_mask = mask << rshift;
val2 = (ucontrol->value.integer.value[1] + min) & mask;
+
+ if (mc->platform_max && val2 > mc->platform_max)
+ return -EINVAL;
+ if (val2 > max)
+ return -EINVAL;
+
val2 = val2 << rshift;
err = snd_soc_component_update_bits(component, reg2, val_mask,
--
2.35.1
Powered by blists - more mailing lists