Dirty Frag: Chained Linux Kernel Flaws Prompt Patch Rush
🛡️ Major Linux distributions are rushing to apply fixes after the embargo on a two‑bug kernel exploit, dubbed Dirty Frag, was broken. The flaw chains CVE-2026-43284 (xfrm‑ESP write‑what‑where, CVSS 8.8) and CVE-2026-43500 (RxRPC out‑of‑bounds write, CVSS 7.8) to enable local privilege escalation to root. Researcher Hyunwoo Kim published a proof‑of‑concept after coordinating with maintainers. Vendors recommend temporarily blacklisting esp4/esp6/rxrpc modules and prioritising immediate patching.
