[FFmpeg-cvslog] fraps: check for overread.

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Wed Nov  9 19:40:59 2011 +0100| [5ace144fe0b7519c389d3ddcdcf7082b4e89b0df] | committer: Anton Khirnov

fraps: check for overread.

Signed-off-by: Anton Khirnov <anton at khirnov.net>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5ace144fe0b7519c389d3ddcdcf7082b4e89b0df
---

 libavcodec/fraps.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/libavcodec/fraps.c b/libavcodec/fraps.c
index ed33c3e..1444eda 100644
--- a/libavcodec/fraps.c
+++ b/libavcodec/fraps.c
@@ -111,6 +111,10 @@ static int fraps2_decode_plane(FrapsContext *s, uint8_t *dst, int stride, int w,
              */
             if(j) dst[i] += dst[i - stride];
             else if(Uoff) dst[i] += 0x80;
+            if (get_bits_left(&gb) < 0) {
+                free_vlc(&vlc);
+                return AVERROR_INVALIDDATA;
+            }
         }
         dst += stride;
     }