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[FFmpeg-devel,9/9] avcodec/gdv: Error out if we had insufficent input for the output frame in decompress_2()

Message ID 20180805202937.7563-9-michael@niedermayer.cc
State Accepted
Commit 35517e3ca7ea2e243e3e29ec7d4d2a9f150f25ed
Headers show

Commit Message

Michael Niedermayer Aug. 5, 2018, 8:29 p.m. UTC 
Fixes: Timeout (with the previous commits to gdv.c)
Fixes: 9422/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_GDV_fuzzer-5143490001371136

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/gdv.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/libavcodec/gdv.c b/libavcodec/gdv.c
index d497f76157..b54f7373d1 100644
--- a/libavcodec/gdv.c
+++ b/libavcodec/gdv.c
@@ -230,6 +230,10 @@  static int decompress_2(AVCodecContext *avctx)
             break;
         }
     }
+
+    if (bytestream2_get_bytes_left_p(pb) > 0)
+        return AVERROR_INVALIDDATA;
+
     return 0;
 }
 
@@ -458,6 +462,8 @@  static int gdv_decode_frame(AVCodecContext *avctx, void *data,
     default:
         av_assert0(0);
     }
+    if (ret < 0)
+        return ret;
 
     memcpy(frame->data[1], gdv->pal, AVPALETTE_SIZE);
     dst = frame->data[0];