Snyk has reported that there have been attempts or successful attacks targeting this vulnerability.
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsUpgrade RHEL:9
kernel-debug-uki-virt
to version 0:5.14.0-427.88.1.el9_4 or higher.
This issue was patched in RHSA-2025:15668
.
Note: Versions mentioned in the description apply only to the upstream kernel-debug-uki-virt
package and not the kernel-debug-uki-virt
package as distributed by RHEL
.
See How to fix?
for RHEL:9
relevant fixed versions and status.
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.