CVE-2018-18397

CVE Details

Release Date:2018-12-12

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


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 5.5 Base Metrics: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Access Vector: Local network Attack Complexity: Low
Privileges Required: Low User Interaction: None
Scope: Unchanged Confidentiality Impact: None
Integrity Impact: High Availability Impact: None

Errata information


PlatformErrataRelease Date
Oracle Linux version 6 (kernel-uek)ELSA-2019-45282019-01-31
Oracle Linux version 7 (kernel)ELSA-2019-01632019-01-29
Oracle Linux version 7 (kernel-uek)ELSA-2019-45282019-01-31
Oracle Linux version 7 (kernel-uek)ELSA-2019-45412019-02-12
Oracle VM version 3.4 (kernel-uek)OVMSA-2019-00022019-02-04



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

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