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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-10-14 17:53:07 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-03 01:16:25 +0100 |
| commit | 32d0561891e1a78f9bd18ad667ca526ab1600a06 (patch) | |
| tree | 9b91b42a19c34af9bf1adb8c2ff807cef7826217 | |
| parent | ed524136e0d0ae26c9f11df42baf72689499f99f (diff) | |
| download | ffmpeg-32d0561891e1a78f9bd18ad667ca526ab1600a06.tar.gz | |
avcodec/notchlc: Check uncompressed size against input for LZ4
Fixes: OOM
Fixes: 26168/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_NOTCHLC_fuzzer-6019839015256064
Fixes: 28397/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_NOTCHLC_fuzzer-5649039941042176
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/notchlc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/notchlc.c b/libavcodec/notchlc.c index 57ce70e945..9a53cad9cb 100644 --- a/libavcodec/notchlc.c +++ b/libavcodec/notchlc.c @@ -496,6 +496,9 @@ static int decode_frame(AVCodecContext *avctx, bytestream2_init(gb, s->lzf_buffer, uncompressed_size); } else if (s->format == 1) { + if (bytestream2_get_bytes_left(gb) < uncompressed_size / 255) + return AVERROR_INVALIDDATA; + av_fast_padded_malloc(&s->uncompressed_buffer, &s->uncompressed_size, uncompressed_size); if (!s->uncompressed_buffer) |