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dsp: q6usm: Check size of payload before access

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Check size of payload before access in q6usm_mmapcallback.

Change-Id: Iff0672532c2ea40e7129237a92d8365d6b554cf2
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>
This commit is contained in:
Vatsal Bucha 2019-01-28 18:54:56 +05:30 • committed by Meng Wang
commit 1c8aec0cfd
1 changed files with 6 additions and 1 deletions
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7
dsp/q6usm.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
* Copyright (c) 2012-2019, The Linux Foundation. All rights reserved.
*/
#include <linux/mutex.h>
#include <linux/wait.h>
@ -490,6 +490,11 @@ static int32_t q6usm_mmapcallback(struct apr_client_data *data, void *priv)
uint32_t token;
uint32_t *payload = data->payload;
if (data->payload_size < (2 * sizeof(uint32_t))) {
pr_err("%s: payload has invalid size[%d]\n", __func__,
data->payload_size);
return -EINVAL;
}
pr_debug("%s: ptr0[0x%x]; ptr1[0x%x]; opcode[0x%x]\n",
__func__, payload[0], payload[1], data->opcode);
pr_debug("%s: token[0x%x]; payload_size[%d]; src[%d]; dest[%d];\n",