ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Jun 21 22:48:54 2018 +0200| [540e8c2d641bf90fc28e47e170f8c0b1962197e9] | committer: Michael Niedermayer
avcodec/mjpegdec: Check for end of bitstream in ljpeg_decode_rgb_scan() Fixes: Timeout Fixes: 8648/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MJPEG_fuzzer-5108395525799936 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=540e8c2d641bf90fc28e47e170f8c0b1962197e9 --- libavcodec/mjpegdec.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index d1dca84d36..00cfdd7151 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -1055,6 +1055,11 @@ static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int nb_components, int p for (mb_x = 0; mb_x < s->mb_width; mb_x++) { int modified_predictor = predictor; + if (get_bits_left(&s->gb) < 1) { + av_log(s->avctx, AV_LOG_ERROR, "bitstream end in rgb_scan\n"); + return AVERROR_INVALIDDATA; + } + if (s->restart_interval && !s->restart_count){ s->restart_count = s->restart_interval; resync_mb_x = mb_x; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
