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
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2018-12-12T07:00:00
Updated: 2019-04-24T05:06:07
Reserved: 2018-10-16T00:00:00
Link: CVE-2018-18397
JSON object: View
NVD Information
Status : Analyzed
Published: 2018-12-12T10:29:00.240
Modified: 2020-08-24T17:37:01.140
Link: CVE-2018-18397
JSON object: View
Redhat Information
No data.
CWE