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https://github.com/Divested-Mobile/DivestOS-Build.git
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49 lines
1.8 KiB
Diff
49 lines
1.8 KiB
Diff
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From e13ebd727d161db7003be6756e61283dce85fa3b Mon Sep 17 00:00:00 2001
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From: Bhalchandra Gajare <gajare@codeaurora.org>
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Date: Tue, 10 Feb 2015 14:44:36 -0800
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Subject: ASoC: q6lsm: Add check for integer overflow
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During sound model registration, the total memory size needed by the
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sound model data is the sum of sound model length, number of zero
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padding bytes and the calibration size. It is possible this sum
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can result into integer overflow causing difficult to debug issues.
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Add check for integer overflow to avoid such possible issues.
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CRs-fixed: 792367
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Change-Id: I9f451aa308214a4eac42b82e2abf1375c858ff30
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Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
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---
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sound/soc/msm/qdsp6v2/q6lsm.c | 11 ++++++++++-
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1 file changed, 10 insertions(+), 1 deletion(-)
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diff --git a/sound/soc/msm/qdsp6v2/q6lsm.c b/sound/soc/msm/qdsp6v2/q6lsm.c
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index db29115..67be542 100644
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--- a/sound/soc/msm/qdsp6v2/q6lsm.c
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+++ b/sound/soc/msm/qdsp6v2/q6lsm.c
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@@ -1,5 +1,5 @@
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/*
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- * Copyright (c) 2013-2014, Linux Foundation. All rights reserved.
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+ * Copyright (c) 2013-2015, Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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@@ -1055,6 +1055,15 @@ int q6lsm_snd_model_buf_alloc(struct lsm_client *client, size_t len)
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client->sound_model.size = len;
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pad_zero = (LSM_ALIGN_BOUNDARY -
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(len % LSM_ALIGN_BOUNDARY));
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+ if ((len > SIZE_MAX - pad_zero) ||
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+ (len + pad_zero >
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+ SIZE_MAX - cal_block->cal_data.size)) {
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+ pr_err("%s: invalid allocation size, len = %zd, pad_zero =%zd, cal_size = %zd\n",
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+ __func__, len, pad_zero,
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+ cal_block->cal_data.size);
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+ rc = -EINVAL;
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+ goto fail;
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+ }
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total_mem = PAGE_ALIGN(pad_zero + len +
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cal_block->cal_data.size);
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--
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cgit v1.1
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