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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-11 12:58:58 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-12-01 21:43:56 +0100 |
| commit | 6ad7403bcee47e7c5e99a9c0266935e0da50c9d2 (patch) | |
| tree | 3f1563280a42cf7c9dd7a98b198a8c5d27e89aac /libavcodec | |
| parent | 6b368bcb85bc7c2dc8544e40e7773dcbce272ab1 (diff) | |
avcodec/wavpack: Check for end of input in wv_unpack_dsd_high()
Fixes: Timeout
Fixes: 50793/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WAVPACK_fuzzer-4980185027444736
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/wavpack.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index 7aa1f65e17..ea77ae7749 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -495,6 +495,8 @@ static int wv_unpack_dsd_high(WavpackFrameContext *s, uint8_t *dst_left, uint8_t sp[0].fltr0 = 0; } + if (DSD_BYTE_READY(high, low) && !bytestream2_get_bytes_left(&s->gbyte)) + return AVERROR_INVALIDDATA; while (DSD_BYTE_READY(high, low) && bytestream2_get_bytes_left(&s->gbyte)) { value = (value << 8) | bytestream2_get_byte(&s->gbyte); high = (high << 8) | 0xff; @@ -530,6 +532,8 @@ static int wv_unpack_dsd_high(WavpackFrameContext *s, uint8_t *dst_left, uint8_t sp[1].fltr0 = 0; } + if (DSD_BYTE_READY(high, low) && !bytestream2_get_bytes_left(&s->gbyte)) + return AVERROR_INVALIDDATA; while (DSD_BYTE_READY(high, low) && bytestream2_get_bytes_left(&s->gbyte)) { value = (value << 8) | bytestream2_get_byte(&s->gbyte); high = (high << 8) | 0xff; |