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selinux 到底是什么个原理

🧀  sudo perf ftrace -G ksys_mmap_pgoff ls | grep selinux
[sudo] password for martins3:
 12)               |        selinux_mmap_file() {
 12)   0.057 us    |            selinux_mmap_addr();
 12)               |            selinux_vm_enough_memory() {

kernel security

https://github.com/Arinerron/CVE-2022-0847-DirtyPipe-Exploit https://www.hackthebox.com/blog/Dirty-Pipe-Explained-CVE-2022-0847 https://github.com/Lissy93/personal-security-checklist https://github.com/CTFd/CTFd https://ctfd.io/

kernel security 问题分析

https://github.com/ZJU-SEC/Readings/blob/main/README.md

这个目录

security/yama/

(如 kptr_restrict、dmesg_restrict ,增加偏移推测难度。 函数粒度随机化 : https://www.phoronix.com/news/Linux-FGKASLR-2022

audit 是个什么原理?

几个经典错误

https://copy.fail/ https://github.com/V4bel/dirtyfrag https://dirtycow.ninja/

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