xenia-project/FFmpeg
1
0
Fork 0
mirror of https://github.com/xenia-project/FFmpeg.git synced 2024-11-25 04:30:02 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

smacker: Make sure we don't fill in huffman codes out of range

Browse Source 
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2013-09-11 15:54:20 +03:00
parent d002fce24a
commit 0679cec6e8
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
libavcodec/smacker.c
View File

@ -268,6 +268,12 @@ static int smacker_decode_header_tree(SmackVContext *smk, GetBitContext *gb, int
if(ctx.last[0] == -1) ctx.last[0] = huff.current++;
if(ctx.last[1] == -1) ctx.last[1] = huff.current++;
if(ctx.last[2] == -1) ctx.last[2] = huff.current++;
if (ctx.last[0] >= huff.length ||
ctx.last[1] >= huff.length ||
ctx.last[2] >= huff.length) {
av_log(smk->avctx, AV_LOG_ERROR, "Huffman codes out of range\n");
err = AVERROR_INVALIDDATA;
}
*recodes = huff.values;