diff options
| author | Michael Niedermayer | 2019-11-18 12:49:25 +0100 |
|---|---|---|
| committer | Michael Niedermayer | 2019-12-31 19:51:57 +0100 |
| commit | 19691eb4d5a4de711c10b9eb466523e32bdda003 (patch) | |
| tree | 9ea5b337ec3cd42e5c0d8a57ee9711fd77d44144 | |
| parent | ef722f7692a13d69bdf62befaaf5f504d1737fbc (diff) | |
avcodec/wmalosslessdec: Check that padding bits is not more than sample bits
Fixes: left shift of 1 by 31 places cannot be represented in type 'int'
Fixes: 18817/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5713317180211200
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 9d428265808255ad2fc60355fe641aaa4fd3dae4)
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 d4f18b9841..45740a090b 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -950,6 +950,8 @@ static int decode_subframe(WmallDecodeCtx *s) for (j = 0; j < subframe_len; j++) s->channel_residues[i][j] = get_sbits_long(&s->gb, bits); } else { + if (s->bits_per_sample < padding_zeroes) + return AVERROR_INVALIDDATA; for (i = 0; i < s->num_channels; i++) { if (s->is_channel_coded[i]) { decode_channel_residues(s, i, subframe_len); |