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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-13 21:12:17 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-09-17 00:06:48 +0200 |
| commit | c467adf3bf9bb4b7fd28956ec698d884e63f145d (patch) | |
| tree | 7b149f970c8a94ac2c5af5b46ec544908161d326 | |
| parent | 161495a3d026a73bc802c66a94e867ef457320d4 (diff) | |
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>
| -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); |