Fixes: signed integer overflow: -2147483648 * -1 cannot be represented in type 'int' Fixes: 18643/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALAC_fuzzer-5672182449700864
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/alac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/alac.c b/libavcodec/alac.c index 09decb806b..d08c946249 100644 --- a/libavcodec/alac.c +++ b/libavcodec/alac.c @@ -227,7 +227,7 @@ static void lpc_prediction(int32_t *error_buffer, uint32_t *buffer_out, val = d - pred[j]; sign = sign_only(val) * error_sign; lpc_coefs[j] -= sign; - val *= sign; + val *= (unsigned)sign; error_val -= (val >> lpc_quant) * (j + 1); } } -- 2.23.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
