A critical use-after-free vulnerability (CVE-2026-23111) in the Linux kernel's nf_tables packet-filtering code allows unprivileged local users to escalate privileges to root and escape containers. The flaw was patched upstream in February 2026, but detailed working exploits have now been publicly released by Exodus Intelligence in June, significantly increasing the risk for unpatched systems.
Security researchers have published a detailed, working exploit for a Linux kernel use-after-free that lets an unprivileged local user escalate to root and break out of a container. The flaw, CVE-2026-23111, sits in the kernel's nf_tables packet-filtering code and was patched upstream on February 5, 2026. Exodus Intelligence released its full technical walkthrough on June 8, and it is not even
Originally published at thehackernews.com
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