Fellow Linux admins-

The Linux kernel is responsible for the basic functions of the computer, so anything that can be done to ensure it's as secure as possible is always a good idea. The release of 6.14 contained some pretty exciting security updates - enhancements for preventing unauthorized memory access, fixes for bluetooth security, enhancements to IPv6 and NAT, and a significant vulnerability in the kernel's key management system was identified and patched.

 

This will hopefully minimize many of those Use After Free vulnerabilities we've seen lately. Read on to learn what you can do to secure your kernel and stay protected from these threats.

You'll also learn about an Apache Tomcat remote code execution (RCE) flaw (CVE-2025-24813) that could grant attackers access to sensitive files on impacted systems.

If you found value in today’s newsletter, please share it with your friends! Do you have a Linux security-related topic you'd like to cover for our audience? We welcome contributions from passionate, insightful community members who share our love for Linux and security!

Yours in Open Source, 

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Dave Wreski

LinuxSecurity Founder

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Linux Kernel 

The Discovery 

A Use After Free (UAF) condition was discovered in the key_put() function of the kernel's key management system.

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The Impact

This vulnerability could allow an attacker to exploit freed memory, leading to unpredictable behavior or even the execution of malicious code. 

 The Fix

This issue has been fixed in Linux kernel 6.14. All admins and users should upgrade to the latest kernel version as soon as possible to mitigate the risk posed by this flaw and benefit from the other enhancements this release offers. 

Your Related Advisories:

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Apache Tomcat 

The Discovery 

Apache Tomcat servers worldwide are under attack after the discovery of CVE-2025-24813, an actively exploited remote code execution (RCE) flaw. 

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The Impact

This stealthy bug grants attackers access to sensitive files on impacted systems.

 The Fix

Important Apache Tomcat updates have been released to mitigate this bug. All impacted users should update now to protect their servers and sensitive information.

Your Related Advisories:

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