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This issue affects kernel versions before 4.8."},{"lang":"es","value":"Una condición de carrera en la función perf_event_open() permite a los atacantes locales filtrar datos confidenciales desde los programas setuid. Como no se mantienen bloqueos relevantes (en particular, la función cred_guard_mutex) durante la llamada ptrace_may_access(), es posible que la tarea de destino especificada realice un syscall execve() con la ejecución setuid anterior a que perf_event_alloc() realmente se conecte, permitiendo que un atacante omita la comprobación ptrace_may_access() y la llamada perf_event_exit_task(current) que se realiza en install_exec_creds() durante las llamadas privilegiadas execve(). Este problema afecta a las versiones del kernel versión anterior a 4.8."}],"affected":[{"source":"secalert@redhat.com","affectedData":[{"vendor":"The Linux Foundation","product":"kernel","versions":[{"version":"older then 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