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CVE-2024-35847

Estado: ModificadaAlta (7.8)—

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: irqchip/gic-v3-its: Evitar el double free en caso de error. La ruta de manejo de errores en its_vpe_irq_domain_alloc() provoca un double free cuando its_vpe_init() falla después de asignar exitosamente al menos una interrupción. Esto sucede porque its_vpe_irq_domain_free() libera las interrupciones junto con el mapa de bits del área y la vprop_page y its_vpe_irq_domain_alloc() posteriormente libera nuevamente el mapa de bits del área y la vprop_page. Solucione este problema invocando incondicionalmente its_vpe_irq_domain_free() que maneja todos los casos correctamente y eliminando el mapa de bits/vprop_page que se libera de its_vpe_irq_domain_alloc().

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 (2)

Debian — Debian LinuxLinux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-415"
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v3-its: Prevent double free on error\n\nThe error handling path in its_vpe_irq_domain_alloc() causes a double free\nwhen its_vpe_init() fails after successfully allocating at least one\ninterrupt. This happens because its_vpe_irq_domain_free() frees the\ninterrupts along with the area bitmap and the vprop_page and\nits_vpe_irq_domain_alloc() subsequently frees the area bitmap and the\nvprop_page again.\n\nFix this by unconditionally invoking its_vpe_irq_domain_free() which\nhandles all cases correctly and by removing the bitmap/vprop_page freeing\nfrom its_vpe_irq_domain_alloc().\n\n[ tglx: Massaged change log ]"
    },
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      "lang": "es",
      "value": "En el kernel de Linux, se resolvió la siguiente vulnerabilidad: irqchip/gic-v3-its: Evitar el double free en caso de error. La ruta de manejo de errores en its_vpe_irq_domain_alloc() provoca un double free cuando its_vpe_init() falla después de asignar exitosamente al menos una interrupción. Esto sucede porque its_vpe_irq_domain_free() libera las interrupciones junto con el mapa de bits del área y la vprop_page y its_vpe_irq_domain_alloc() posteriormente libera nuevamente el mapa de bits del área y la vprop_page. Solucione este problema invocando incondicionalmente its_vpe_irq_domain_free() que maneja todos los casos correctamente y eliminando el mapa de bits/vprop_page que se libera de its_vpe_irq_domain_alloc()."
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  "lastModified": "2026-08-04T11:17:58.660",
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