Validate tileoffset table size #839
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Signed-off-by: Peter Hillman <peterh@wetafx.co.nz>
Signed-off-by: Peter Hillman <peterh@wetafx.co.nz>
Signed-off-by: Peter Hillman <peterh@wetafx.co.nz>
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This looks fine to me |
kdt3rd
approved these changes
Oct 22, 2020
kdt3rd
approved these changes
Oct 22, 2020
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Applies similar logic to #824's ScanLine handling to prevent excessive memory allocation when reading truncated Tiled and DeepTiled files.
If the dataWindow and tileDescription indicate there are over a million tiles in level 0 of the file, will scan forward to check the file is at least large enough to contain enough tiles for that level. This prevents small specially crafted OpenEXR files causing large memory allocations in the library.
Addresses https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25648