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CVE-2024-57949

Estado: ModificadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

irqchip/gic-v3-its: Don't enable interrupts in its_irq_set_vcpu_affinity()

The following call-chain leads to enabling interrupts in a nested interrupt disabled section:

This was broken in commit b97e8a2f7130, which replaced the original raw_spin_[un]lock() pair with guard(raw_spinlock_irq).

Fix the issue by using guard(raw_spinlock).

[ tglx: Massaged change log ]

Detalles técnicos trazas, registros y código del informe original
irq_set_vcpu_affinity()
  irq_get_desc_lock()
     raw_spin_lock_irqsave()   <--- Disable interrupts
  its_irq_set_vcpu_affinity()
     guard(raw_spinlock_irq)   <--- Enables interrupts when leaving the guard()
  irq_put_desc_unlock()        <--- Warns because interrupts are enabled

CVSS

Probabilidad de explotación (EPSS)

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)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v3-its: Don't enable interrupts in its_irq_set_vcpu_affinity()\n\nThe following call-chain leads to enabling interrupts in a nested interrupt\ndisabled section:\n\nirq_set_vcpu_affinity()\n  irq_get_desc_lock()\n     raw_spin_lock_irqsave()   <--- Disable interrupts\n  its_irq_set_vcpu_affinity()\n     guard(raw_spinlock_irq)   <--- Enables interrupts when leaving the guard()\n  irq_put_desc_unlock()        <--- Warns because interrupts are enabled\n\nThis was broken in commit b97e8a2f7130, which replaced the original\nraw_spin_[un]lock() pair with guard(raw_spinlock_irq).\n\nFix the issue by using guard(raw_spinlock).\n\n[ tglx: Massaged change log ]"
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: irqchip/gic-v3-its: No habilitar interrupciones en its_irq_set_vcpu_affinity() La siguiente cadena de llamadas lleva a habilitar interrupciones en una sección de interrupción deshabilitada anidada: irq_set_vcpu_affinity() irq_get_desc_lock() raw_spin_lock_irqsave() &lt;--- Deshabilitar interrupciones its_irq_set_vcpu_affinity() guard(raw_spinlock_irq) &lt;--- Habilita interrupciones al salir de guard() irq_put_desc_unlock() &lt;--- Advierte porque las interrupciones están habilitadas Esto se rompió en el commit b97e8a2f7130, que reemplazó el par original raw_spin_[un]lock() con guard(raw_spinlock_irq). Solucione el problema usando guard(raw_spinlock). [ tglx: Registro de cambios modificado ]"
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