From f4700142dcc09b6d477e8bccd22aaf4752acaf32 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 8 Aug 2021 20:46:32 +0200 Subject: [PATCH] avcodec/vc1dec: ff_print_debug_info() does not support WMV3 field_mode Fixes: out of array read Fixes: 36331/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMV3_fuzzer-5140494328922112.fuzz Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit c59b5e3d1e0121ea23b5b326529f5bdca44cf982) Signed-off-by: Michael Niedermayer --- libavcodec/vc1dec.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c index 80a7863716..c325af2d7e 100644 --- a/libavcodec/vc1dec.c +++ b/libavcodec/vc1dec.c @@ -1139,12 +1139,14 @@ image: if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) { if ((ret = av_frame_ref(pict, s->current_picture_ptr->f)) < 0) goto err; - ff_print_debug_info(s, s->current_picture_ptr, pict); + if (!v->field_mode) + ff_print_debug_info(s, s->current_picture_ptr, pict); *got_frame = 1; } else if (s->last_picture_ptr) { if ((ret = av_frame_ref(pict, s->last_picture_ptr->f)) < 0) goto err; - ff_print_debug_info(s, s->last_picture_ptr, pict); + if (!v->field_mode) + ff_print_debug_info(s, s->last_picture_ptr, pict); *got_frame = 1; } }