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3 commits

Author SHA1 Message Date
Brian Gianforcaro
fd0dbd1ebf Tests: Establish root Tests directory, move Userland/Tests there 
With the goal of centralizing all tests in the system, this is a
first step to establish a Tests sub-tree. It will contain all of
the unit tests and test harnesses for the various components in the
system.
 2021-05-06 17:54:28 +02:00
Ben Wiederhake
29eceebdbf Tests: Build automatically, fix compilation errors 2020-08-02 17:15:36 +02:00
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