[FFmpeg-cvslog] avcodec/wmaprodec: Set packet_loss when we error out on a sanity check

[Michael Niedermayer]

ffmpeg | branch: release/2.8 | Michael Niedermayer <michael at niedermayer.cc> | Tue Nov 12 20:25:00 2019 +0100| [7c15568a5030511c8d9bbad480fbeec179c553f9] | committer: Michael Niedermayer

avcodec/wmaprodec: Set packet_loss when we error out on a sanity check

Fixes: left shift of negative value -34
Fixes: 18719/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMAPRO_fuzzer-5642658173419520

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit a9cbd25d89dbdf72f7b616fdf672d7da36143cfe)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7c15568a5030511c8d9bbad480fbeec179c553f9
---

 libavcodec/wmaprodec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/wmaprodec.c b/libavcodec/wmaprodec.c
index e47102945a..3aa3e6350a 100644
--- a/libavcodec/wmaprodec.c
+++ b/libavcodec/wmaprodec.c
@@ -1548,6 +1548,7 @@ static int decode_packet(AVCodecContext *avctx, void *data,
         if (buf_size < avctx->block_align) {
             av_log(avctx, AV_LOG_ERROR, "Input packet too small (%d < %d)\n",
                    buf_size, avctx->block_align);
+            s->packet_loss = 1;
             return AVERROR_INVALIDDATA;
         }