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Kernel: Mark the stack check guard as READONLY_AFTER_INIT

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This makes it harder for an exploit to replace the kernel's randomized
canary value since the memory containing it will be mapped read-only.
This commit is contained in:
Andreas Kling 2021-07-27 14:47:42 +02:00
parent 84d3428ab3
commit 8f6bc7fd10
1 changed files with 1 additions and 1 deletions
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2
Kernel/init.cpp
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@ -68,7 +68,7 @@ extern ctor_func_t start_ctors[];
extern ctor_func_t end_ctors[];
extern size_t __stack_chk_guard;
size_t __stack_chk_guard;
READONLY_AFTER_INIT size_t __stack_chk_guard;
extern "C" u8 start_of_safemem_text[];
extern "C" u8 end_of_safemem_text[];