vulnerability
Debian: CVE-2018-18397: linux -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:N/I:P/A:N) | Dec 12, 2018 | Jul 30, 2024 | Aug 15, 2025 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:P/A:N)
Published
Dec 12, 2018
Added
Jul 30, 2024
Modified
Aug 15, 2025
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.
Solution
debian-upgrade-linux
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