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Threat Intelligence Report

CVE-2026-31431: “Copy Fail” Linux kernel flaw lets local users gain root in seconds

📅 April 30, 2026 📰 webflow.sysdig.com 🔍 1 CVE(s) referenced

A newly discovered Linux kernel flaw, "Copy Fail" (CVE-2026-31431), allows any local unprivileged user to gain root access in seconds by corrupting setuid binaries via a reliably exploitable logic bug present since 2017.

CVE-2026-31431

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