CentOS Linux: CVE-2018-18397: Important: kernel security, bug fix, and enhancement update (Multiple Advisories)
2
(AV:L/AC:L/Au:N/C:N/I:P/A:N)
12/12/2018
03/19/2019
02/05/2019
05/25/2023
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(s)
- centos-upgrade-kernel
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