https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sun, 04 Oct 2026 20:57:19 +0000 https://vulnerability.circl.lu/vuln/cve-2025-38352 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()</p> <p>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().</p> <p>If a concurrent posix_cpu_timer_del() runs at that moment, it won&#39;t be able to detect timer-&gt;it.cpu.firing != 0: cpu_timer_task_rcu() and/or lock_task_sighand() will fail.</p> <p>Add the tsk-&gt;exit_state check into run_posix_cpu_timers() to fix this.</p> <p>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(&amp;tsk-&gt;posix_cputimers_work.work) will fail anyway in this case.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()</p> <p>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().</p> <p>If a concurrent posix_cpu_timer_del() runs at that moment, it won&#39;t be able to detect timer-&gt;it.cpu.firing != 0: cpu_timer_task_rcu() and/or lock_task_sighand() will fail.</p> <p>Add the tsk-&gt;exit_state check into run_posix_cpu_timers() to fix this.</p> <p>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(&amp;tsk-&gt;posix_cputimers_work.work) will fail anyway in this case.</p> https://vulnerability.circl.lu/vuln/cve-2025-38352