On Sun, Feb 02, 2020 at 01:16:38AM +0100, Michael Niedermayer wrote:
Fixes: left shift of negative value -2
Fixes:
20305/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEHD_fuzzer-5677196618498048
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavcodec/mlpdsp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/mlpdsp.c b/libavcodec/mlpdsp.c
index 32a4503b64..12bef3a721 100644
--- a/libavcodec/mlpdsp.c
+++ b/libavcodec/mlpdsp.c
@@ -79,7 +79,7 @@ void ff_mlp_rematrix_channel(int32_t *samples,
if (matrix_noise_shift) {
index &= access_unit_size_pow2 - 1;
- accum += noise_buffer[index] << (matrix_noise_shift + 7);
+ accum += noise_buffer[index] * (1 << (matrix_noise_shift + 7));
index += index2;
}
--
2.17.1
_______________________________________________
lgtm.
--
Jai
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