ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Fri Dec 4 16:23:24 2015 +0100| [a85b02dcf70f62a6a433a607143f1f78fa5648bb] | committer: Michael Niedermayer
avcodec/jpeg2000dec: Check bpno in decode_cblk() Fixes: undefined shift Fixes: c409ef86f892335a0a164b5871174d5a/asan_heap-oob_1dff564_2159_162b7234616deab02b544410455eb07b.mov Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a85b02dcf70f62a6a433a607143f1f78fa5648bb --- libavcodec/jpeg2000dec.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 8cdc729..515d6a0 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -1493,6 +1493,10 @@ static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty, ff_mqc_initdec(&t1->mqc, cblk->data, 0, 1); while (passno--) { + if (bpno < 0) { + av_log(s->avctx, AV_LOG_ERROR, "bpno became negative\n"); + return AVERROR_INVALIDDATA; + } switch(pass_t) { case 0: decode_sigpass(t1, width, height, bpno + 1, bandpos, _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
