CVE-2019-20172

Kernel/VM/MemoryManager.cpp in SerenityOS before 2019-12-30 does not reject syscalls with pointers into the kernel-only virtual address space, which allows local users to gain privileges by overwriting a return address that was found on the kernel stack.

Date published : 2019-12-30

https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdom

https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9