[FFmpeg-cvslog] truemotion2: error out if the huffman tree has no nodes.

Ronald S. Bultje git at videolan.org
Fri Feb 24 04:34:58 CET 2012


ffmpeg | branch: master | Ronald S. Bultje <rsbultje at gmail.com> | Wed Feb 22 12:19:52 2012 -0800| [2b83e8b7005d531bc78b0fd4f699e9faa54ce9bb] | committer: Ronald S. Bultje

truemotion2: error out if the huffman tree has no nodes.

This prevents crashers and errors further down when reading nodes in the
empty tree.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable at libav.org

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2b83e8b7005d531bc78b0fd4f699e9faa54ce9bb
---

 libavcodec/truemotion2.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c
index 9e45045..7be148c 100644
--- a/libavcodec/truemotion2.c
+++ b/libavcodec/truemotion2.c
@@ -132,7 +132,7 @@ static int tm2_build_huff_table(TM2Context *ctx, TM2Codes *code)
                huff.val_bits, huff.max_bits);
         return -1;
     }
-    if((huff.nodes < 0) || (huff.nodes > 0x10000)) {
+    if((huff.nodes <= 0) || (huff.nodes > 0x10000)) {
         av_log(ctx->avctx, AV_LOG_ERROR, "Incorrect number of Huffman tree nodes: %i\n", huff.nodes);
         return -1;
     }



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