Saturday, April 13, 2024

Linux kernel Bug Let Attackers Insert Malicious Code Into The Kernel Address Space

The cybersecurity researchers have detected that the Linux kernel bug is allowing the threat actors to implement some malicious code into the kernel address space.

Linux uses ASLR for user-space programs for a long time, ASLR Address-space layout randomization is generally used for its very famous method to make exploits more difficult by putting various objects at random.

However, the experts have outlined some key details regarding this malicious code, and that’s why they have started looking for the patches so that they can circumvent such an unwanted situation.


This is not the first time when Kernel gets attacked, as it has been attacked by various threat actors and with different methods. To attack Kernel, the initial thing for an attacker is to find if it has any kind of bug in the system or not.

If the attacker finds any bug in the kernel code, then they can use it to insert different malicious code into the kernel address space by using several methods and redirect the kernel’s execution to that code.

Randomizing the location of Kernel

After investigating the procedure, the security analysts came to know that ASLR (KASLR) is currently randomized where the kernel code is placed at boot time. 

However, the researchers affirmed that using KASLR is quite beneficial for the threat actors, as it has a one-sided effect that moves the interrupt descriptor table (IDT) far away from the other kernel to a location that is present in the read-only memory. 

Basically, ASLR  is a “statistical defense,” and here the brute force techniques can be used to overcome such situations. A situation where it has been described that in the case of 1000 location, brute force will find it once and fail 999 times.


Among all the malicious code, KASLR is one of the most minor problematic codes that the experts came across. However, cybersecurity researchers have claimed that there are a few steps that will help the user to bypass such a situation.

Some steps are to be taken to protect the data from getting leaked; later it can be used to identify where the kernel was loaded. 

Moreover, the kptr_restrict sysctl should be allowed so that the kernel pointers should not get leaked to a userspace. The patches that have been mentioned by the analysts are currently only for 64-bit x86.

You can follow us on LinkedinTwitterFacebook for daily Cybersecurity, and hacking news updates.


Latest articles

Alert! Palo Alto RCE Zero-day Vulnerability Actively Exploited in the Wild

In a recent security bulletin, Palo Alto Networks disclosed a critical vulnerability in its...

6-year-old Lighttpd Flaw Impacts Intel And Lenovo Servers

The software supply chain is filled with various challenges, such as untracked security vulnerabilities...

Hackers Employ Deepfake Technology To Impersonate as LastPass CEO

A LastPass employee recently became the target of an attempted fraud involving sophisticated audio...

Sisence Data Breach, CISA Urges To Reset Login Credentials

In response to a recent data breach at Sisense, a provider of data analytics...

DuckDuckGo Launches Privacy Pro: 3-in-1 service With VPN

DuckDuckGo has launched Privacy Pro, a new subscription service that promises to enhance user...

Cyber Attack Surge by 28%:Education Sector at High Risk

In Q1 2024, Check Point Research (CPR) witnessed a notable increase in the average...

Midnight Blizzard’s Microsoft Corporate Email Hack Threatens Federal Agencies: CISA Warns

The Cybersecurity and Infrastructure Security Agency (CISA) has issued an emergency directive concerning a...
BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

Top 3 SME Attack Vectors

Securing the Top 3 SME Attack Vectors

Cybercriminals are laying siege to small-to-medium enterprises (SMEs) across sectors. 73% of SMEs know they were breached in 2023. The real rate could be closer to 100%.

  • Stolen credentials
  • Phishing
  • Exploitation of vulnerabilities

Related Articles