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CVE-2024-42314

Estado: ModificadaAlta (7.8)—

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: corrige el use after free el mapa de extensión al agregar páginas a una biografía comprimida En add_ra_bio_pages() estamos accediendo al mapa de extensión para calcular 'add_size' después de que eliminamos nuestra referencia en el mapa de extensión, lo que resulta en un use-after-free. Solucione este problema calculando 'add_size' antes de eliminar nuestra referencia del mapa de extensión.

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)

CWE

Referencias

JSON original (NVD)

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          "value": "CWE-416"
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix extent map use-after-free when adding pages to compressed bio\n\nAt add_ra_bio_pages() we are accessing the extent map to calculate\n'add_size' after we dropped our reference on the extent map, resulting\nin a use-after-free. Fix this by computing 'add_size' before dropping our\nextent map reference."
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    }
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