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[FFmpeg-devel,8/9] epafdec: prevent overflow during block alignment calculation

Message ID 6c13f789-e293-f929-7225-d520f59c22bc@googlemail.com
State Accepted
Headers show

Commit Message

Andreas Cadhalpun Jan. 6, 2017, 7:49 p.m. UTC 
---
 libavformat/epafdec.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/libavformat/epafdec.c b/libavformat/epafdec.c
index 29190fff72..b28f035cdf 100644
--- a/libavformat/epafdec.c
+++ b/libavformat/epafdec.c
@@ -83,6 +83,7 @@  static int epaf_read_header(AVFormatContext *s)
     }
 
     st->codecpar->bits_per_coded_sample = av_get_bits_per_sample(st->codecpar->codec_id);
+    FF_RETURN_ON_OVERFLOW(s, st->codecpar->bits_per_coded_sample > INT_MAX / st->codecpar->channels)
     st->codecpar->block_align = st->codecpar->bits_per_coded_sample * st->codecpar->channels / 8;
 
     avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);