From e048a9cab10f1d41dca7b1ad9c8ecaceb3424d86 Mon Sep 17 00:00:00 2001
From: Daniel Kang <daniel.d.kang@gmail.com>
Date: Tue, 11 Jan 2011 14:08:45 +0000
Subject: Do not crash for illegal sample size, fixes issue 2502.

Patch by Daniel Kang, daniel.d.kang at gmail

Originally committed as revision 26309 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/pcm.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'libavcodec/pcm.c')

diff --git a/libavcodec/pcm.c b/libavcodec/pcm.c
index b6b49dc049..533e834a54 100644
--- a/libavcodec/pcm.c
+++ b/libavcodec/pcm.c
@@ -292,6 +292,11 @@ static int pcm_decode_frame(AVCodecContext *avctx,
         /* we process 40-bit blocks per channel for LXF */
         sample_size = 5;
 
+    if (sample_size == 0) {
+        av_log(avctx, AV_LOG_ERROR, "Invalid sample_size\n");
+        return AVERROR(EINVAL);
+    }
+
     n = avctx->channels * sample_size;
 
     if(n && buf_size % n){
-- 
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