fkie_cve-2019-15792
Vulnerability from fkie_nvd
Published
2020-04-24 00:15
Modified
2024-11-21 04:29
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file->private_data, a void* that points to a filesystem-dependent type, to a "struct shiftfs_file_info *". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code.
References
security@ubuntu.comhttps://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4cMailing List, Patch, Third Party Advisory
security@ubuntu.comhttps://usn.ubuntu.com/usn/usn-4183-1Vendor Advisory
security@ubuntu.comhttps://usn.ubuntu.com/usn/usn-4184-1Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4cMailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/usn/usn-4183-1Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/usn/usn-4184-1Vendor Advisory
Impacted products
Vendor Product Version
linux linux_kernel 5.0
linux linux_kernel 5.3
canonical ubuntu_linux 18.04
canonical ubuntu_linux 19.04


To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file-\u003eprivate_data, a void* that points to a filesystem-dependent type, to a \"struct shiftfs_file_info *\". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code."
    },
    {
      "lang": "es",
      "value": "En shiftfs, un parche no upstream para el Kernel de Linux  incluido en las series kernel de Ubuntu versiones 5.0 y 5.3, shiftfs_btrfs_ioctl_fd_replace() llama a fdget(oldfd), luego sin m\u00e1s comprobaciones pasa el archivo resultante* a shiftfs_real_fdget(), que lanza file-\u0026gt;private_data, un vac\u00edo* que apunta a un tipo dependiente del sistema de archivos, a un \"struct shiftfs_file_info *\". Como no es necesario que el private_data sea un puntero, un atacante puede utilizarlo para provocar una denegaci\u00f3n de servicio o posiblemente ejecutar un c\u00f3digo arbitrario."
    }
  ],
  "id": "CVE-2019-15792",
  "lastModified": "2024-11-21T04:29:28.617",
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
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  ]
}


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