linux-kernel
15 posts
Article
User namespaces are still a root pipe
Dirty Frag is a Linux kernel UAF in IP fragment reassembly reachable via unprivileged user namespaces. CVSS 7.8. Mechanism, telemetry gaps, patch boundary.
Article
Your patched kernel is still vulnerable
Dirty Frag - CVE-2026-31337, CVSS 7.8 - is a UAF in the Linux kernel's IPv4 fragment reassembly path. Container-to-host root on every major distro.
Article
Copy.fail has been root since 2017
Copy.fail turns an unprivileged Linux user into root via a copy_file_range credential cache flaw. Reachable since 2017. Telemetry gaps explained.