Fixes: Timeout (78 sec -> 15 millisec) Fixes: 13147/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JV_fuzzer-5727107827630080
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/jvdec.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/jvdec.c b/libavcodec/jvdec.c index cbe83d3c10..bf8a55cbad 100644 --- a/libavcodec/jvdec.c +++ b/libavcodec/jvdec.c @@ -170,6 +170,11 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, GetBitContext gb; init_get_bits(&gb, buf, 8 * video_size); + if ( avctx->height/8 * (avctx->width/8) > 4 * video_size) { + av_log(avctx, AV_LOG_ERROR, "Insuffient input data for dimensions\n"); + return AVERROR_INVALIDDATA; + } + for (j = 0; j < avctx->height; j += 8) for (i = 0; i < avctx->width; i += 8) decode8x8(&gb, -- 2.20.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel