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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-31 15:22:53 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-21 23:42:35 +0100 |
| commit | 61620896a1acd80e00cb8821febe39efd3724978 (patch) | |
| tree | 548522233da728887389caed291ffeeed992c75f | |
| parent | 6b430f066b9d6637f145fe228e7950a03820a1ab (diff) | |
| download | ffmpeg-61620896a1acd80e00cb8821febe39efd3724978.tar.gz | |
avcodec/qdm2: The smallest header seems to have 2 bytes so treat 1 as invalid
Fixes: Timeout (217sec -> 2ms)
Fixes: 18488/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_QDM2_fuzzer-5708293662310400
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit e36ccb5048f052b8b2ef08281cb607fa53a7b7e4)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/qdm2.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/qdm2.c b/libavcodec/qdm2.c index ac8ae8cbbb..7b9d50b234 100644 --- a/libavcodec/qdm2.c +++ b/libavcodec/qdm2.c @@ -1704,7 +1704,7 @@ static av_cold int qdm2_decode_init(AVCodecContext *avctx) s->group_size = bytestream2_get_be32(&gb); s->fft_size = bytestream2_get_be32(&gb); s->checksum_size = bytestream2_get_be32(&gb); - if (s->checksum_size >= 1U << 28 || !s->checksum_size) { + if (s->checksum_size >= 1U << 28 || s->checksum_size <= 1) { av_log(avctx, AV_LOG_ERROR, "data block size invalid (%u)\n", s->checksum_size); return AVERROR_INVALIDDATA; } |