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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-13 21:12:17 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-02-02 14:18:20 +0100 |
| commit | a1194166548dc6932fd5f7fb26b28c731dcf4c65 (patch) | |
| tree | ab345ce823248349610a365d09d6614cffcd10b9 | |
| parent | 31f9d1ec36bb6239b6ea25a7d3e47c9a90709270 (diff) | |
| download | ffmpeg-a1194166548dc6932fd5f7fb26b28c731dcf4c65.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 725e811070..b8d0f6220d 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -932,6 +932,8 @@ 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); |