[FFmpeg-cvslog] avcodec/vc1dec: ff_print_debug_info() does not support WMV3 field_mode

Michael Niedermayer git at videolan.org
Sun Aug 22 19:09:36 EEST 2021


ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sun Aug  8 20:46:32 2021 +0200| [c59b5e3d1e0121ea23b5b326529f5bdca44cf982] | committer: Michael Niedermayer

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 <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c59b5e3d1e0121ea23b5b326529f5bdca44cf982
---

 libavcodec/vc1dec.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index 1fb1950ade..335cd92953 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -1151,12 +1151,14 @@ 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;
         }
     }



More information about the ffmpeg-cvslog mailing list