diff --git a/libavformat/pcm.c b/libavformat/pcm.c
index 767bbd045a..1effc0b6f8 100644
--- a/libavformat/pcm.c
+++ b/libavformat/pcm.c
@@ -39,7 +39,11 @@ int ff_pcm_read_packet(AVFormatContext *s, AVPacket *pkt)
      * Clamp to RAW_SAMPLES if larger.
      */
     size = FFMAX(par->sample_rate/25, 1);
-    size = FFMIN(size, RAW_SAMPLES) * par->block_align;
+    if (par->block_align <= INT_MAX / RAW_SAMPLES) {
+        size = FFMIN(size, RAW_SAMPLES) * par->block_align;
+    } else {
+        size = par->block_align;
+    }
 
     ret = av_get_packet(s->pb, pkt, size);