Fix a possible buffer overflow in snd_pcm_chmap_print()

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/pcm.c b/src/pcm.c
index 7f562ab..713ff90 100644
--- a/src/pcm.c
+++ b/src/pcm.c
@@ -1344,7 +1344,7 @@ int snd_pcm_chmap_print(const snd_pcm_chmap_t *map, size_t maxlen, char *buf)
 				return -ENOMEM;
 		}
 		if (map->pos[i] & SND_CHMAP_DRIVER_SPEC)
-			len += snprintf(buf + len, maxlen, "%d", p);
+			len += snprintf(buf + len, maxlen - len, "%d", p);
 		else {
 			const char *name = _snd_chmap_names[p];
 			if (name)