Copy Fail (CVE‑2026‑31431) Enables Root Escalation on Shared CI/CD Build Hosts
The newly disclosed ‘Copy Fail’ Linux kernel flaw (CVE‑2026‑31431) lets any unprivileged user corrupt a file cache and gain root privileges. Listed in the CISA KEV catalog, it threatens shared build servers and container workloads, prompting immediate patching and detection guidance for CI/CD pipelines.