ALL POSTS

Critical Linux "Copy Fail" Vulnerability Grants Root Access Across Major Distributions

Key Findings CVE-2026-31431 (Copy Fail) is a 9-year-old Linux kernel vulnerability enabling unprivileged users to gain root access A 732-byte Python script can exploit the flaw to modify setuid binaries in memory and achieve root privileges The vulnerability affects all major Linux distributions since 2017, including Ubuntu, RHEL, Amazon Linux, SUSE, and Debian Exploitation is reliable and portable across distributions with no race conditions required The flaw exists in the a

Apr 303 min read

Nine Linux AppArmor Flaws in CrackArmor Enable Root Escalation, Container Isolation Bypass

Key Findings * Nine critical vulnerabilities discovered in Linux AppArmor security module * Enables root escalation and container isolation bypass * Affects Linux kernels since version 4.11 * Impacts over 12.6 million enterprise Linux instances * Allows unprivileged users to manipulate security profiles * Can trigger denial-of-service attacks * Enables arbitrary code execution within kernel * No CVE identifiers assigned yet * Vulnerabilities exist since 2017 Background AppArm

Mar 132 min read