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F5 Networks: K83102920 (CVE-2018-18397): Linux kernel vulnerability CVE-2018-18397

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F5 Networks: K83102920 (CVE-2018-18397): Linux kernel vulnerability CVE-2018-18397

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:P/A:N)
Published
12/12/2018
Created
12/11/2020
Added
12/09/2020
Modified
12/09/2020

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)

  • f5-big-ip-upgrade-latest

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