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| author | Laurent Aimar <fenrir@videolan.org> | 2011-09-17 16:56:30 +0200 |
|---|---|---|
| committer | Reinhard Tartler <siretart@tauware.de> | 2011-09-26 19:26:33 +0200 |
| commit | b4a1bf0bbf53cc6a736a608732b2ac1de5c2447b (patch) | |
| tree | 7a4388a46539eaab306376adc8e327f520af9aa7 | |
| parent | f0bcba238a540793adc514fb84e74282b04d2418 (diff) | |
| download | ffmpeg-b4a1bf0bbf53cc6a736a608732b2ac1de5c2447b.tar.gz | |
rv34: Fix potential overreads
Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit b4ed3d78cb6c41c9d3ee5918c326ab925edd6a89)
Signed-off-by: Anton Khirnov <anton@khirnov.net>
| -rw-r--r-- | libavcodec/rv34.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/libavcodec/rv34.c b/libavcodec/rv34.c index 2383903625..87fca5c23e 100644 --- a/libavcodec/rv34.c +++ b/libavcodec/rv34.c @@ -1436,6 +1436,7 @@ int ff_rv34_decode_frame(AVCodecContext *avctx, slice_count = (*buf++) + 1; slices_hdr = buf + 4; buf += 8 * slice_count; + buf_size -= 1 + 8 * slice_count; }else slice_count = avctx->slice_count; @@ -1454,7 +1455,7 @@ int ff_rv34_decode_frame(AVCodecContext *avctx, if( (avctx->skip_frame >= AVDISCARD_NONREF && si.type==AV_PICTURE_TYPE_B) || (avctx->skip_frame >= AVDISCARD_NONKEY && si.type!=AV_PICTURE_TYPE_I) || avctx->skip_frame >= AVDISCARD_ALL) - return buf_size; + return avpkt->size; for(i=0; i<slice_count; i++){ int offset= get_slice_offset(avctx, slices_hdr, i); @@ -1503,7 +1504,7 @@ int ff_rv34_decode_frame(AVCodecContext *avctx, } s->current_picture_ptr= NULL; //so we can detect if frame_end wasnt called (find some nicer solution...) } - return buf_size; + return avpkt->size; } av_cold int ff_rv34_decode_end(AVCodecContext *avctx) |