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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-13 21:12:17 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-09 13:37:20 +0200 |
| commit | 2fee883f527ad0fdc3bf3b69143f8d1c161c1dab (patch) | |
| tree | 3ceb817577a64f6996d8f13273b772638e6bc4d1 | |
| parent | b9c0480f175be26fda2d84b61af6d5637e34fe0f (diff) | |
| download | ffmpeg-2fee883f527ad0fdc3bf3b69143f8d1c161c1dab.tar.gz | |
avcodec/wmalosslessdec: Check remaining space before padding and channel residue
Fixes: Timeout (1101sec -> 0.4sec)
Fixes: 24491/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5725337036783616
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 c467adf3bf9bb4b7fd28956ec698d884e63f145d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/wmalosslessdec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c index 2228eecd96..5afc0544d5 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -935,6 +935,8 @@ static int decode_subframe(WmallDecodeCtx *s) s->do_lpc = 0; } + if (get_bits_left(&s->gb) < 1) + return AVERROR_INVALIDDATA; if (get_bits1(&s->gb)) padding_zeroes = get_bits(&s->gb, 5); |