[FFmpeg-cvslog] avcodec/4xm: treat AV_LOG_ERROR cases as errors

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sat Aug 13 23:41:20 2022 +0200| [8ab944c4c33e7bc2d5c0ebb62a57099817b350c2] | committer: Michael Niedermayer

avcodec/4xm: treat AV_LOG_ERROR cases as errors

Fixes: Timeout
Fixes: 49504/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FOURXM_fuzzer-570457772222054

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=8ab944c4c33e7bc2d5c0ebb62a57099817b350c2
---

 libavcodec/4xm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/4xm.c b/libavcodec/4xm.c
index 8941d715fa..a7c9043b0a 100644
--- a/libavcodec/4xm.c
+++ b/libavcodec/4xm.c
@@ -950,9 +950,11 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *picture,
     } else if (frame_4cc == AV_RL32("snd_")) {
         av_log(avctx, AV_LOG_ERROR, "ignoring snd_ chunk length:%d\n",
                buf_size);
+        return AVERROR_INVALIDDATA;
     } else {
         av_log(avctx, AV_LOG_ERROR, "ignoring unknown chunk length:%d\n",
                buf_size);
+        return AVERROR_INVALIDDATA;
     }
 
     picture->key_frame = picture->pict_type == AV_PICTURE_TYPE_I;