Well, that isn't really the problem? Isn't it better described as an incorrect privilege check for mmap? Should there be a special capability and switch to enable mapping address zero?
Linux: virtual address 0 is mappable via privileged write() to /proc/*/mem https://bugs.chromium.org/p/project-zero/issues/detail?id=1792 …
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Does this bug show up only when smap is disabled. Should the reproducer be run with nosmap
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