6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Curtis Malainey <cujomalainey@xxxxxxxxxxxx>
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@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Curtis Malainey <cujomalainey@xxxxxxxxxxxx>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Reviewed-by: Daniel Baluta <daniel.baluta@xxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Link: https://msgid.link/r/20240213123834.4827-1-peter.ujfalusi@xxxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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;
}
