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fe9680f0a4
This patch fixes some issues with the mmap() and mprotect() syscalls, neither of whom were checking the permission bits of the underlying files when mapping an inode MAP_SHARED. This made it possible to subvert execution of any running program by simply memory-mapping its executable and replacing some of the code. Test: Kernel/mmap-write-into-running-programs-executable-file.cpp |
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mmap-write-into-running-programs-executable-file.cpp | ||
uaf-close-while-blocked-in-read.cpp |