One-Character Linux Kernel Flaw Enables Local Root Access, Exploits Now Public
A Linux kernel use-after-free vulnerability (CVE-2026-23111) in nf_tables allows unprivileged local users to gain root access and escape containers. Exploit code was published on June 8, 2026, after the flaw was patched upstream on February 5, 2026. Systems not yet updated are at risk.
Unpatched systems risk local root compromise and container escape via a publicly available exploit.


