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avcodec/vc1dec: ff_print_debug_info() does not support WMV3 field_mode

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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 <michael@niedermayer.cc>
(cherry picked from commit c59b5e3d1e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-08-08 20:46:32 +02:00
parent 9e84c17a43
commit 6c551b8d10
1 changed files with 4 additions and 2 deletions
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6
libavcodec/vc1dec.c
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@ -1098,12 +1098,14 @@ 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;
}
}