
Threat Analysis: CVE-2026-31431 Copy Fail LPE
In this report, we analyze the impact of the CVE-2026-31431 vulnerability, known as 'Copy-Fail', a privilege escalation exploit that uses Page Cache poisoning on Linux systems. The sophistication of this technique allows manipulation of critical binaries directly in memory without modifying the disk, compromising kernel integrity and granting superuser access in a way that is undetectable to traditional defenses.




