From a282420a4938879fe1f09717fdbf2bfff105370d Mon Sep 17 00:00:00 2001
From: Alexandre Ratchov <alex@caoua.org>
Date: Fri, 4 Nov 2016 09:18:04 +0100
Subject: [PATCH] In OSS/FreeBSD sio_setpar(), validate the encoding, ensuring
 we never end-up with an unknown one.

---
 libsndio/sio_oss.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/libsndio/sio_oss.c b/libsndio/sio_oss.c
index a348797..2c96622 100644
--- a/libsndio/sio_oss.c
+++ b/libsndio/sio_oss.c
@@ -415,6 +415,16 @@ sio_oss_setpar(struct sio_hdl *sh, struct sio_par *par)
 		return 0;
 	}
 
+	for (i = 0; ; i++) {
+		if (i == sizeof(formats) / sizeof(formats[0])) {
+			DPRINTF("sio_oss_setpar: unknown fmt %d\n", hdl->fmt);
+			hdl->sio.eof = 1;
+			return 0;
+		}
+		if (formats[i].fmt == hdl->fmt)
+			break;
+	}
+
 	if (ioctl(hdl->fd, SNDCTL_DSP_SPEED, &hdl->rate) < 0) {
 		DPERROR("sio_oss_setpar: SPEED");
 		hdl->sio.eof = 1;