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imageio: add ability restrict max image size

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WEBP_MAX_IMAGE_SIZE can be defined to control this limit.
Set it to 1.5GiB w/--config=asan-fuzzer to avoid OOM with large resolution
images. This limit leaves some headroom over the single image max of 2^14 *
2^14 * 4

BUG=webp:355

Change-Id: I4d48eb0a063638297a842582e0229dfd5a54df5f
This commit is contained in:
James Zern 2017-08-01 19:07:43 +00:00
parent 6f9daa4a3a
commit 08ea9ecde3
1 changed files with 5 additions and 1 deletions
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6
imageio/imageio_util.c
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@ -137,7 +137,11 @@ void ImgIoUtilCopyPlane(const uint8_t* src, int src_stride,
int ImgIoUtilCheckSizeArgumentsOverflow(uint64_t nmemb, size_t size) {
const uint64_t total_size = nmemb * size;
return (total_size == (size_t)total_size);
int ok = (total_size == (size_t)total_size);
#if defined(WEBP_MAX_IMAGE_SIZE)
ok = ok && (total_size <= (uint64_t)WEBP_MAX_IMAGE_SIZE);
#endif
return ok;
}
// -----------------------------------------------------------------------------