An exploit has been published for a local privilege escalation vulnerability dubbed “Copy Fail” that impacts Linux kernels released since 2017, allowing an unprivileged local attacker to gain root ...
Tracked as CVE-2026-31431 with a CVSS score of 7.8, Copy Fail was uncovered and named by researchers at Xint.io and Theori. The flaw allows an unprivileged local user to write four controlled bytes ...