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CVE-2023-39198

Full vulnerability record from the local CVENow database.

Description

A race condition was found in the QXL driver in the Linux kernel. The qxl_mode_dumb_create() function dereferences the qobj returned by the qxl_gem_object_create_with_handle(), but the handle is the only one holding a reference to it. This flaw allows an attacker to guess the returned handle value and trigger a use-after-free issue, potentially leading to a denial of service or privilege escalation.

Severity
MEDIUM
CVSS score
6.4 (v3.1)
Vulnerability status
Modified
Source identifier
Published
2023-11-09 20:15:08.730000
Last modified
2026-11-07 05:17:39.370000
View original CVE JSON
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  "sourceIdentifier": "[email protected]",
  "published": "2023-11-09T20:15:08.730",
  "lastModified": "2026-11-07T05:17:39.370",
  "vulnStatus": "Modified",
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    },
    {
      "lang": "es",
      "value": "Se encontró una condición de ejecución en el controlador QXL del kernel de Linux. La función qxl_mode_dumb_create() desreferencia el qobj devuelto por qxl_gem_object_create_with_handle(), pero el identificador es el único que contiene una referencia a él. Esta falla permite a un atacante adivinar el valor de identificador devuelto y desencadenar un problema de use-after-free, lo que podría provocar una denegación de servicio o una escalada de privilegios."
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