mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/flacdec: Fix overflow in multiplication in decode_subframe_fixed()
Fixes: signed integer overflow: 2 * 1629495328 cannot be represented in type 'int' Fixes: 4716/clusterfuzz-testcase-minimized-5835915940331520 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -302,7 +302,7 @@ static int decode_subframe_fixed(FLACContext *s, int32_t *decoded,
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if (pred_order > 2)
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c = b - decoded[pred_order-2] + decoded[pred_order-3];
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if (pred_order > 3)
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d = c - decoded[pred_order-2] + 2*decoded[pred_order-3] - decoded[pred_order-4];
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d = c - decoded[pred_order-2] + 2U*decoded[pred_order-3] - decoded[pred_order-4];
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switch (pred_order) {
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case 0:
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