From 4f33a9803a3068ce2d52289fc1db60375dc8b7a5 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 28 May 2020 00:19:56 +0200 Subject: avcodec/mpeg12dec: Fix got_output This makes got_output consistent with the code in slice_end() which sets the output in slice_end() if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) { int ret = av_frame_ref(pict, s->current_picture_ptr->f); ... } else { Fixes: assertion failure Fixes: 22178/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG1VIDEO_fuzzer-5664234440753152 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/mpeg12dec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c index 40d054def5..54e122cd9d 100644 --- a/libavcodec/mpeg12dec.c +++ b/libavcodec/mpeg12dec.c @@ -2497,7 +2497,7 @@ static int decode_chunks(AVCodecContext *avctx, AVFrame *picture, return ret; else if (ret) { // FIXME: merge with the stuff in mpeg_decode_slice - if (s2->last_picture_ptr || s2->low_delay) + if (s2->last_picture_ptr || s2->low_delay || s2->pict_type == AV_PICTURE_TYPE_B) *got_output = 1; } } -- cgit v1.2.3