CVE-2022-49146
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
virtio: use virtio_device_ready() in virtio_device_restore()
After waking up a suspended VM, the kernel prints the following trace for virtio drivers which do not directly call virtio_device_ready() in the .restore:
This happens because we don't invoke .enable_cbs callback in virtio_device_restore(). That callback is used by some transports (e.g. virtio-pci) to enable interrupts.
Let's fix it, by calling virtio_device_ready() as we do in virtio_dev_probe(). This function calls .enable_cts callback and sets DRIVER_OK status bit.
This fix also avoids setting DRIVER_OK twice for those drivers that call virtio_device_ready() in the .restore.
Detalles técnicos trazas, registros y código del informe original
PM: suspend exit
irq 22: nobody cared (try booting with the "irqpoll" option)
Call Trace:
<IRQ>
dump_stack_lvl+0x38/0x49
dump_stack+0x10/0x12
__report_bad_irq+0x3a/0xaf
note_interrupt.cold+0xb/0x60
handle_irq_event+0x71/0x80
handle_fasteoi_irq+0x95/0x1e0
__common_interrupt+0x6b/0x110
common_interrupt+0x63/0xe0
asm_common_interrupt+0x1e/0x40
? __do_softirq+0x75/0x2f3
irq_exit_rcu+0x93/0xe0
sysvec_apic_timer_interrupt+0xac/0xd0
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x12/0x20
arch_cpu_idle+0x12/0x20
default_idle_call+0x39/0xf0
do_idle+0x1b5/0x210
cpu_startup_entry+0x20/0x30
start_secondary+0xf3/0x100
secondary_startup_64_no_verify+0xc3/0xcb
</TASK>
handlers:
[<000000008f9bac49>] vp_interrupt
[<000000008f9bac49>] vp_interrupt
Disabling IRQ #22CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.26%
- Percentil entre todas las CVEs puntuadas: 16
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio: use virtio_device_ready() in virtio_device_restore()\n\nAfter waking up a suspended VM, the kernel prints the following trace\nfor virtio drivers which do not directly call virtio_device_ready() in\nthe .restore:\n\n PM: suspend exit\n irq 22: nobody cared (try booting with the \"irqpoll\" option)\n Call Trace:\n <IRQ>\n dump_stack_lvl+0x38/0x49\n dump_stack+0x10/0x12\n __report_bad_irq+0x3a/0xaf\n note_interrupt.cold+0xb/0x60\n handle_irq_event+0x71/0x80\n handle_fasteoi_irq+0x95/0x1e0\n __common_interrupt+0x6b/0x110\n common_interrupt+0x63/0xe0\n asm_common_interrupt+0x1e/0x40\n ? __do_softirq+0x75/0x2f3\n irq_exit_rcu+0x93/0xe0\n sysvec_apic_timer_interrupt+0xac/0xd0\n </IRQ>\n <TASK>\n asm_sysvec_apic_timer_interrupt+0x12/0x20\n arch_cpu_idle+0x12/0x20\n default_idle_call+0x39/0xf0\n do_idle+0x1b5/0x210\n cpu_startup_entry+0x20/0x30\n start_secondary+0xf3/0x100\n secondary_startup_64_no_verify+0xc3/0xcb\n </TASK>\n handlers:\n [<000000008f9bac49>] vp_interrupt\n [<000000008f9bac49>] vp_interrupt\n Disabling IRQ #22\n\nThis happens because we don't invoke .enable_cbs callback in\nvirtio_device_restore(). That callback is used by some transports\n(e.g. virtio-pci) to enable interrupts.\n\nLet's fix it, by calling virtio_device_ready() as we do in\nvirtio_dev_probe(). This function calls .enable_cts callback and sets\nDRIVER_OK status bit.\n\nThis fix also avoids setting DRIVER_OK twice for those drivers that\ncall virtio_device_ready() in the .restore."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: virtio: usar virtio_device_ready() en virtio_device_restore() Después de reactivar una máquina virtual suspendida, el kernel imprime el siguiente seguimiento para los controladores virtio que no llaman directamente a virtio_device_ready() en .restore: PM: suspender salir irq 22: a nadie le importó (intente arrancar con la opción \"irqpoll\") Seguimiento de llamada: dump_stack_lvl+0x38/0x49 dump_stack+0x10/0x12 __report_bad_irq+0x3a/0xaf note_interrupt.cold+0xb/0x60 handle_irq_event+0x71/0x80 handle_fasteoi_irq+0x95/0x1e0 __common_interrupt+0x6b/0x110 common_interrupt+0x63/0xe0 asm_common_interrupt+0x1e/0x40 ? __do_softirq+0x75/0x2f3 irq_exit_rcu+0x93/0xe0 sysvec_apic_timer_interrupt+0xac/0xd0 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch_cpu_idle+0x12/0x20 default_idle_call+0x39/0xf0 do_idle+0x1b5/0x210 cpu_startup_entry+0x20/0x30 start_secondary+0xf3/0x100 secondary_startup_64_no_verify+0xc3/0xcb controladores: [<000000008f9bac49>] vp_interrupt [<000000008f9bac49>] vp_interrupt Deshabilitando IRQ #22 Esto sucede porque no invocamos la devolución de llamada .enable_cbs en virtio_device_restore(). Esa devolución de llamada es utilizada por algunos transportes (por ejemplo, virtio-pci) para habilitar interrupciones. Vamos a solucionarlo, llamando a virtio_device_ready() como lo hacemos en virtio_dev_probe(). Esta función llama a la devolución de llamada .enable_cts y establece el bit de estado DRIVER_OK. Esta solución también evita configurar DRIVER_OK dos veces para aquellos controladores que llaman a virtio_device_ready() en .restore."
}
],
"lastModified": "2026-06-17T05:17:12.700",
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