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The Exploit: Penetration Testing Insights From The Frontlines
Linux
  • Defense in Depth Against Linux Kernel Privilege Escalation

    Defense in Depth Against Linux Kernel Privilege Escalation: A Practical Guide for Container Workloads
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    With current local privilege escalation exploits like Copy Fail and Dirty Frag active in the wild, harden your defenses to halt attacks even before patching.
    Ryan Chaplin May 26, 2026
  • Copy Fail - Local Linux Privilege Escalation in 4 lines

    Copy Fail – Local Linux Privilege Escalation in 4 lines
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    CVE-2026-31431, dubbed Copy Fail, allows privilege escalation to root on Linux distros missing the latest kernel patches. Learn what to do in this blog.
    Jason Taylor May 8, 2026
  • Penguin with red cross

    Sudo Privilege Escalation Vulnerability Discovered
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    Qualys has discovered and reported a serious vulnerability (CVE-2021-3156) affecting the sudo utility. Patches are now available and Raxis recommends applying them immediately.
    Raxis Research Team January 27, 2021