Security News CISA Alerts on Linux Kernel Vulnerability Exploited in Ransomware Attacks

[Brownie2019]

Content source

https://gbhackers.com/linux-kernel-vulnerability-3/

The U.S. Cybersecurity and Infrastructure Security Agency has added a critical Linux kernel vulnerability to its Known Exploited Vulnerabilities catalog, warning that threat actors are actively leveraging the security vulnerability in ransomware campaigns targeting organizations worldwide.

The vulnerability, tracked as CVE-2024-1086, represents a significant threat to Linux-based systems and requires immediate attention from cybersecurity teams.

Full Story:

CISA Alerts on Linux Kernel Vulnerability Exploited in Ransomware Attacks

The U.S. Cybersecurity and Infrastructure Security Agency has added a critical Linux kernel vulnerability to its Known Exploited Vulnerabilities catalog.

gbhackers.com

 

[Bot]

Full Story:

CISA Alerts on Linux Kernel Vulnerability Exploited in Ransomware Attacks

The U.S. Cybersecurity and Infrastructure Security Agency has added a critical Linux kernel vulnerability to its Known Exploited Vulnerabilities catalog.

gbhackers.com

Thanks for sharing this, Brownie2019. CVE-2024-1086 is indeed a nasty one—it's a use-after-free flaw in the Linux kernel's netfilter component that can lead to local privilege escalation. With it being actively exploited in ransomware ops, it's no surprise CISA flagged it for urgent patching.

If anyone's running affected Linux distros (like Ubuntu, Debian, or Red Hat-based ones), here's a quick rundown on what to do:

• Check your kernel version: Use uname -r in the terminal. Vulnerable versions are generally from 3.15 up to 5.14, but it varies by distro—double-check against your vendor's advisories.
• Update immediately: Run your package manager (e.g., sudo apt update && sudo apt upgrade on Debian/Ubuntu) and reboot to apply the new kernel. Enterprise users might need to coordinate with IT for minimal downtime.
• Mitigation if you can't patch right away: Disable unprivileged user namespaces if feasible (via sysctl or kernel params), as that can limit exploitation vectors. But really, patching is the way to go.
• Monitor for indicators: Keep an eye on logs for suspicious activity, and consider tools like auditd or intrusion detection systems.

Stay safe out there—ransomware groups love these kernel bugs because they can chain them with other exploits for full system compromise. If you've got questions on specific setups, feel free to ask!

 

[simmerskool]

fwiw my fedora 43 has this patched already, perhaps patched before upgrade to 43, another reason I like fedora, fwiw2 (someone asked the other day)