fkie_cve-2022-50227
Vulnerability from fkie_nvd
Published
2025-06-18 11:15
Modified
2025-06-18 13:47
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Initialize Xen timer only once Add a check for existing xen timers before initializing a new one. Currently kvm_xen_init_timer() is called on every KVM_XEN_VCPU_ATTR_TYPE_TIMER, which is causing the following ODEBUG crash when vcpu->arch.xen.timer is already set. ODEBUG: init active (active state 0) object type: hrtimer hint: xen_timer_callbac0 RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:502 Call Trace: __debug_object_init debug_hrtimer_init debug_init hrtimer_init kvm_xen_init_timer kvm_xen_vcpu_set_attr kvm_arch_vcpu_ioctl kvm_vcpu_ioctl vfs_ioctl
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9a9b5771e930f408c3419799000f76a9abaf2278
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/af735db31285fa699384c649be72a9f32ecbb665
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86/xen: Initialize Xen timer only once\n\nAdd a check for existing xen timers before initializing a new one.\n\nCurrently kvm_xen_init_timer() is called on every\nKVM_XEN_VCPU_ATTR_TYPE_TIMER, which is causing the following ODEBUG\ncrash when vcpu-\u003earch.xen.timer is already set.\n\nODEBUG: init active (active state 0)\nobject type: hrtimer hint: xen_timer_callbac0\nRIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:502\nCall Trace:\n__debug_object_init\ndebug_hrtimer_init\ndebug_init\nhrtimer_init\nkvm_xen_init_timer\nkvm_xen_vcpu_set_attr\nkvm_arch_vcpu_ioctl\nkvm_vcpu_ioctl\nvfs_ioctl"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: x86/xen: Inicializar el temporizador Xen solo una vez. Se ha a\u00f1adido una comprobaci\u00f3n de los temporizadores Xen existentes antes de inicializar uno nuevo. Actualmente, se llama a kvm_xen_init_timer() en cada KVM_XEN_VCPU_ATTR_TYPE_TIMER, lo que provoca el siguiente fallo de ODEBUG cuando vcpu-\u0026gt;arch.xen.timer ya est\u00e1 configurado. ODEBUG: init activo (estado activo 0) tipo de objeto: hrtimer sugerencia: xen_timer_callbac0 RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:502 Seguimiento de llamadas: __debug_object_init debug_hrtimer_init debug_init hrtimer_init kvm_xen_init_timer kvm_xen_vcpu_set_attr kvm_arch_vcpu_ioctl kvm_vcpu_ioctl vfs_ioctl"
    }
  ],
  "id": "CVE-2022-50227",
  "lastModified": "2025-06-18T13:47:40.833",
  "metrics": {},
  "published": "2025-06-18T11:15:53.743",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9a9b5771e930f408c3419799000f76a9abaf2278"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/af735db31285fa699384c649be72a9f32ecbb665"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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