Linux EUVD-2026-15256

Apply the upstream Linux kernel patch by updating to a fixed kernel version through your distribution's package manager. Users should identify which stable kernel series they are running and apply the corresponding fix commit (b7e91827e1cf89cd34ad11dc8f8c010b70ab786e for mainline or equivalent backports for earlier series) available via https://git.kernel.org/stable. For distributions like Ubuntu, RHEL, Debian, and others, this fix should appear in the next kernel security update for affected versions. Until patching is completed, disable i40e napi poll tracepoints if they have been explicitly enabled for debugging by removing any active tracepoint rules via the tracefs interface (echo 0 > /sys/kernel/debug/tracing/events/i40e/napi_poll/enable). Most production systems running default kernel configurations are unaffected since tracepoints are typically disabled by default; the vulnerability primarily impacts systems with active kernel tracing or debugging enabled.