Security update for the Linux Kernel

Security update for the Linux Kernel

Security update for the Linux Kernel

ELSA-2025-20551: Unbreakable Enterprise kernel security update (IMPORTANT)

ELSA-2025-15782: kernel security update (MODERATE)

Important: kernel security update

In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() If an exiting non-autoreaping task has already passed exit_notify() and calls handle_posix_cpu_timers() from IRQ, it can be reaped by its parent or debugger right after unlock_task_sighand(). If a concurrent posix_cpu_timer_del() runs at that moment, it won't be able to detect timer->it.cpu.firing != 0: cpu_timer_task_rcu() and/or lock_task_sighand() will fail. Add the tsk->exit_state check into run_posix_cpu_timers() to fix this. This fix is not needed if CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y, because exit_task_work() is called before exit_notify(). But the check still makes sense, task_work_add(&tsk->posix_cputimers_work.work) will fail anyway in this case.

ELSA-2025-15662: kernel security update (IMPORTANT)

Уязвимость функции handle_posix_cpu_timers ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании

Security update for the Linux Kernel

Security update for the Linux Kernel

ELSA-2025-20552: Unbreakable Enterprise kernel security update (IMPORTANT)

Important: kernel security update

ELSA-2025-15471: kernel security update (IMPORTANT)

Security update for the Linux Kernel

Security update for the Linux Kernel

Security update for the Linux Kernel

ELSA-2025-15785: kernel security update (IMPORTANT)

Security update for the Linux Kernel (Live Patch 69 for SUSE Linux Enterprise 12 SP5)

Security update for the Linux Kernel (Live Patch 64 for SUSE Linux Enterprise 12 SP5)