fkie_cve-2018-18397
Vulnerability from fkie_nvd
Published
2018-12-12 10:29
Modified
2024-11-21 03:55
Severity ?
Summary
The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| redhat | openshift_container_platform | 3.11 | |
| redhat | virtualization_host | 4.0 | |
| redhat | enterprise_linux_desktop | 7.0 | |
| redhat | enterprise_linux_server | 7.0 | |
| redhat | enterprise_linux_server_aus | 7.4 | |
| redhat | enterprise_linux_server_aus | 7.6 | |
| redhat | enterprise_linux_server_eus | 7.4 | |
| redhat | enterprise_linux_server_eus | 7.5 | |
| redhat | enterprise_linux_server_eus | 7.6 | |
| redhat | enterprise_linux_server_tus | 7.4 | |
| redhat | enterprise_linux_server_tus | 7.6 | |
| redhat | enterprise_linux_workstation | 7.0 | |
| canonical | ubuntu_linux | 14.04 | |
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 18.04 | |
| canonical | ubuntu_linux | 18.10 |
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"value": "The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c."
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"value": "La implementaci\u00f3n de userfaultfd en el kernel de Linux en versiones anteriores a la 4.17 gestiona de manera incorrecta para ciertas llamadas ioctl UFFDIO_, tal y como queda demostrado al permitir que usuarios locales escriban datos en huecos en un archivo tmpfs (si el usuario tiene acceso de solo lectura a dicho archivo que contiene huecos). Esto est\u00e1 relacionado con fs/userfaultfd.c y mm/userfaultfd.c."
}
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"id": "CVE-2018-18397",
"lastModified": "2024-11-21T03:55:52.280",
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"authentication": "NONE",
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"baseScore": 2.1,
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"integrityImpact": "PARTIAL",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.