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I’m trying to write a simple lsm module that also do nothing. but I have several problems.
static int rdwn_task_kill(
struct task_struct* p,
struct siginfo *info,
int sig,
u32 secid
) {
return 0;
}
static struct s… Continue reading writing simple lsm in kernel 5.x [migrated]
I want to control some accesses of root in Linux- fedora, for example, I want to run a process and I want root not to be able to kill it.
I use SELinux and I changed root mapping from unconfined to guest_u:
Login Name SELinux Use… Continue reading Selinux: changing root mapping
This is a follow up question regarding this answer
In Linux does the encryption of the bluetooth link using bluetooth 4.2 or 5.x depend on the version of the kernel – and whether or not the kernel includes the cryptographic module?
Continue reading bluetooth link encrytion under bluetooth 4 .2 and 5.x
I recently read this article by a security researcher on Linux security shortcomings. It covers things like sandboxing, root privileges, exploit mitigations, the kernel itself, etc. They seem pretty serious, but for years I’ve been told Li… Continue reading Is Linux actually insecure? [closed]
From here:
I have heard rumors of a grsecurity Wunderwaffe called AUTOSLAB. We don’t know much about it. Presumably, it makes Linux allocate kernel objects in separate slab caches depending on the object type. That could ruin the heap spr… Continue reading What is AUTOSLAB, and how does it work?
Windows Kernel Data Protection is a kernel security feature which appears to use Extended Page Tables (EPT, a hardware virtualization feature) to enforce read-only pages. How effective is this at protecting from kernel exploits in the real… Continue reading How effective is Windows KDP for exploit mitigation in practice?
Is there a way to detect fileless kernel compromise in Linux?
The only one way to analyze this kind of attack is by volatility. Volatility is a very good product, but not often updated especially with modern kernels (obviously because kern… Continue reading How to detect fileless kernel compromise in linux
The recent University of Minnesota study of how easy it is to get malicious code into the Linux kernel generated a lot of anger online. Commentators suggested that this project wasted developer time, performed "experiments on humans&q… Continue reading How many backdoors is Linux estimated to have?
I’m trying to learn and solve some ‘kernel related’ ctf challenges (reading writups to try to run same environment and achieve root using one of the kernel-pwn technique…).
I’m using Ubuntu 20 VM and (for example) this challenge:
Unfortu… Continue reading ctf kernel challenges does not work [closed]
I’m changing my operating system windows 10 to ubuntu linux after installing complete then reboot my lenovo laptop it was saying me kernel panicstrong text
Continue reading kernel panic in Lenovo t530 how to remove it [closed]