[FFmpeg-devel] [PATCH 4/4] avcodec/rasc: Check input size in decode_fint()
Michael Niedermayer
michael at niedermayer.cc
Fri Oct 18 01:25:14 EEST 2019
Fixes: Timeout (11sec -> 42ms)
Fixes: 18287/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_RASC_fuzzer-5637866331308032
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
libavcodec/rasc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavcodec/rasc.c b/libavcodec/rasc.c
index 21fc43f325..cdf20a6db9 100644
--- a/libavcodec/rasc.c
+++ b/libavcodec/rasc.c
@@ -124,6 +124,8 @@ static int decode_fint(AVCodecContext *avctx,
clear_plane(avctx, s->frame1);
return 0;
}
+ if (bytestream2_get_bytes_left(gb) < 72)
+ return AVERROR_INVALIDDATA;
bytestream2_skip(gb, 8);
w = bytestream2_get_le32(gb);
--
2.23.0
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