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author | Michael Niedermayer <michael@niedermayer.cc> | 2019-12-07 20:42:54 +0100 |
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committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-02 19:55:09 +0200 |
commit | 5684147644f529f4ac9f8aa3b658d80296db36ba (patch) | |
tree | c385cbbe940017c6c6f288ff8914ab84ebd7d299 | |
parent | 4f739a58795ad76207bb9a2674333dbd08914c0f (diff) | |
download | ffmpeg-5684147644f529f4ac9f8aa3b658d80296db36ba.tar.gz |
avcodec/alac: Fix integer overflow in LPC coefficient adaption
Fixes: signed integer overflow: 267693597 * 10 cannot be represented in type 'int'
Fixes: 19237/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALAC_fuzzer-5755407700328448
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 6a865cec5e7584ef476f394fc55c1fc91cec1a14)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r-- | libavcodec/alac.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/alac.c b/libavcodec/alac.c index 21a48d252a..0d9a83c6bb 100644 --- a/libavcodec/alac.c +++ b/libavcodec/alac.c @@ -228,7 +228,7 @@ static void lpc_prediction(int32_t *error_buffer, uint32_t *buffer_out, sign = sign_only(val) * error_sign; lpc_coefs[j] -= sign; val *= (unsigned)sign; - error_val -= (val >> lpc_quant) * (j + 1); + error_val -= (val >> lpc_quant) * (j + 1U); } } } |