add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/Documentation/security/self-protection.rst
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 Memory poisoning
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-When releasing memory, it is best to poison the contents (clear stack on
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-syscall return, wipe heap memory on a free), to avoid reuse attacks that
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-rely on the old contents of memory. This frustrates many uninitialized
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-variable attacks, stack content exposures, heap content exposures, and
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-use-after-free attacks.
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+When releasing memory, it is best to poison the contents, to avoid reuse
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+attacks that rely on the old contents of memory. E.g., clear stack on a
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+syscall return (``CONFIG_GCC_PLUGIN_STACKLEAK``), wipe heap memory on a
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+free. This frustrates many uninitialized variable attacks, stack content
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+exposures, heap content exposures, and use-after-free attacks.
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 Destination tracking
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