CVE-2018-18397
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- CVE-2018-18397
CVE Details
| Release Date: | 2018-12-12 | |
| Impact: | Moderate | What is this? |
Description
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.
See more information about CVE-2018-18397 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 5.5 |
| Vector String: | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| Version: | 3.0 |
| Attack Vector: | Local |
| Attack Complexity: | Low |
| Privileges Required: | Low |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality Impact: | None |
| Integrity Impact: | High |
| Availability Impact: | None |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 6 (kernel-uek) | ELSA-2019-4528 | 2019-01-31 |
| Oracle Linux version 7 (kernel) | ELSA-2019-0163 | 2019-01-29 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2019-4528 | 2019-01-31 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2019-4541 | 2019-02-12 |
| Oracle VM version 3.4 (kernel-uek) | OVMSA-2019-0002 | 2019-02-04 |
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