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nvd-json-data-feeds/CVE-2021/CVE-2021-472xx/CVE-2021-47235.json
cad-safe-bot 2c5db5e52b Auto-Update: 2024-12-30T21:00:20.105512+00:00
2024-12-30 21:03:44 +00:00

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{
"id": "CVE-2021-47235",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-05-21T15:15:12.777",
"lastModified": "2024-12-30T19:06:05.170",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: fix potential use-after-free in ec_bhf_remove\n\nstatic void ec_bhf_remove(struct pci_dev *dev)\n{\n...\n\tstruct ec_bhf_priv *priv = netdev_priv(net_dev);\n\n\tunregister_netdev(net_dev);\n\tfree_netdev(net_dev);\n\n\tpci_iounmap(dev, priv->dma_io);\n\tpci_iounmap(dev, priv->io);\n...\n}\n\npriv is netdev private data, but it is used\nafter free_netdev(). It can cause use-after-free when accessing priv\npointer. So, fix it by moving free_netdev() after pci_iounmap()\ncalls."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: ethernet: soluciona el posible use after free en ec_bhf_remove static void ec_bhf_remove(struct pci_dev *dev) { ... struct ec_bhf_priv *priv = netdev_priv(net_dev); anular el registro_netdev(net_dev); free_netdev(net_dev); pci_iounmap(dev, priv->dma_io); pci_iounmap(dev, priv->io); ... } priv son datos privados de netdev, pero se usan despu\u00e9s de free_netdev(). Puede causar use after free al acceder al puntero privado. Entonces, solucionelo moviendo free_netdev() despu\u00e9s de las llamadas a pci_iounmap()."
}
],
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{
"source": "nvd@nist.gov",
"type": "Primary",
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"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9
}
]
},
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"source": "nvd@nist.gov",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
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