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Aug 14, 2026 · Information Security

CVE-2026-68138: Linux Kernel qdisc Rate‑Table Race Condition Allows Local Privilege Escalation (PoC Included)

Security researchers disclosed CVE‑2026‑68138, a race‑condition flaw in the Linux kernel’s qdisc rate‑table code that lets an unprivileged user gain a root shell within seconds; it affects Linux 5.1‑7.1.5, has a publicly available PoC, and can be mitigated by applying upstream patches or disabling unprivileged namespaces.