6.6-stable review patch. If anyone has any objections, please let me know.
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From: Curtis Malainey cujomalainey@chromium.org
commit fcbe4873089c84da641df75cda9cac2e9addbb4b upstream.
commit 74ad8ed65121 ("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: 74ad8ed65121 ("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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- sound/soc/sof/ipc3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/sound/soc/sof/ipc3.c +++ b/sound/soc/sof/ipc3.c @@ -1067,7 +1067,7 @@ static void sof_ipc3_rx_msg(struct snd_s 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"); return; }