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fix invalid check for buffer size

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BUG=webp:383,webp:512

Change-Id: I8ebbb5ca4860d73c3b59b12e238b54a89184bed0
(cherry picked from commit 71ed73cf86)
(cherry picked from commit dad31750e3)
This commit is contained in:
Pascal Massimino 2018-05-25 13:25:39 +02:00 committed by James Zern
parent 1f14632a18
commit 16fc937d2e
1 changed files with 2 additions and 1 deletions
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3
src/dec/buffer_dec.c
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@ -74,7 +74,8 @@ static VP8StatusCode CheckDecBuffer(const WebPDecBuffer* const buffer) {
} else { // RGB checks
const WebPRGBABuffer* const buf = &buffer->u.RGBA;
const int stride = abs(buf->stride);
const uint64_t size = MIN_BUFFER_SIZE(width, height, stride);
const uint64_t size =
MIN_BUFFER_SIZE(width * kModeBpp[mode], height, stride);
ok &= (size <= buf->size);
ok &= (stride >= width * kModeBpp[mode]);
ok &= (buf->rgba != NULL);