CISA flags actively exploited ‘Copy Fail’ Linux kernel flaw enabling root takeover across major distros — unpatched systems may remain vulnerable to attack CISA warns of the actively exploited “Copy Fail” Linux flaw (CVE-2026-31431), enabling root access, with a public exploit released before patches were ready. #hardware https://www.tomshardware.com/software/linux/cisa-flags-actively-exploited-copy-fail-linux-kernel-flaw-enabling-root-takeover-across-major-distros-unpatched-systems-may-remain-vulnerable-to-attack