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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2018-12-12T07:00:00
Updated: 2024-08-05T11:08:21.825Z
Reserved: 2018-10-16T00:00:00
Link: CVE-2018-18397
Vulnrichment
No data.
NVD
Status : Modified
Published: 2018-12-12T10:29:00.240
Modified: 2024-11-21T03:55:52.280
Link: CVE-2018-18397
Redhat