Linux CVE-2026-23309

Users should update their Linux kernel to version 6.9.0 or later, or apply the specific backported patches from git.kernel.org/stable using the commit hashes provided in the references (13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e for current development, or the corresponding stable branch commits). System administrators managing long-term support kernels should coordinate with their distribution vendors (Red Hat, Canonical, SUSE, etc.) for stable branch updates. Until patching is feasible, restrict access to the kernel's event tracing subsystem by disabling the CONFIG_TRACE_EVENTS kernel configuration option if not required for operations, and limit local access to the system through account management and network segmentation, as the vulnerability requires local execution context to trigger.