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ASoC: SOF: IPC3: fix message bounds on ipc ops

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commit 74ad8ed651 ("ASoC: SOF: ipc3: Implement rx_msg IPC ops")
introduced a new allocation before the upper bounds check in
do_rx_work. As a result A DSP can cause bad allocations if spewing
garbage.

Fixes: 74ad8ed651 ("ASoC: SOF: ipc3: Implement rx_msg IPC ops")
Reported-by: Tim Van Patten <timvp@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://msgid.link/r/20240213123834.4827-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Curtis Malainey 2024-02-13 14:38:34 +02:00 committed by Mark Brown
parent c40aad7c81
commit fcbe487308
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GPG key ID: 24D68B725D5487D0
1 changed files with 1 additions and 1 deletions
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2
sound/soc/sof/ipc3.c
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@ -1067,7 +1067,7 @@ static void sof_ipc3_rx_msg(struct snd_sof_dev *sdev)
return; return;
} }
if (hdr.size < sizeof(hdr)) { if (hdr.size < sizeof(hdr) || hdr.size > SOF_IPC_MSG_MAX_SIZE) {
dev_err(sdev->dev, "The received message size is invalid\n"); dev_err(sdev->dev, "The received message size is invalid\n");
return; return;
} }