When "idle" isn't idle: how a Linux kernel optimization became a QUIC bugCloudflare / May 12, 2026cwndが最小で固定される送信時のepoch補正が原因epochを未来にしない修正quiccubicquichecwndcongestion-controllinux-kernel
How Cloudflare responded to the “Copy Fail” Linux vulnerabilityCloudflare / May 7, 2026Behavioral detection flagged exploit within minutesbpf-lsm mitigated exploit without rebootNo evidence of exploitation; no customer impactlinux-kernelcve-2026-31431bpf-lsmaf_algkernel-securityruntime-mitigation