Andreas Kling 862b3ccb4e Kernel: Enforce W^X between sys$mmap() and sys$execve() ... It's now an error to sys$mmap() a file as writable if it's currently mapped executable by anyone else. It's also an error to sys$execve() a file that's currently mapped writable by anyone else. This fixes a race condition vulnerability where one program could make modifications to an executable while another process was in the kernel, in the middle of exec'ing the same executable. Test: Kernel/elf-execve-mmap-race.cpp		2020-01-18 23:40:12 +01:00
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Kernel	Kernel: Enforce W^X between sys$mmap() and sys$execve()	2020-01-18 23:40:12 +01:00