dennis95 / dennix

Dennix is a unix-like hobbyist operating system written from scratch.
ISC License
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Do not trust pointers from userspace #2

Open dennis95 opened 7 years ago

dennis95 commented 7 years ago

Syscalls currently don't check whether pointers they were given are accessible from userspace. This is a security issue since a userspace process might overwrite kernel code and other things it should not access.