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Oracle Linux: (CVE-2018-18397) (Multiple Advisories): Unbreakable Enterprise kernel security update

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Oracle Linux: (CVE-2018-18397) (Multiple Advisories): Unbreakable Enterprise kernel security update

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:P/A:N)
Published
12/12/2018
Created
03/19/2019
Added
01/30/2019
Modified
07/21/2020

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)

  • oracle-linux-upgrade-kernel
  • oracle-linux-upgrade-kernel-uek
  • oracle-linux-upgrade-kernel-uek-debug
  • oracle-linux-upgrade-kernel-uek-debug-devel
  • oracle-linux-upgrade-kernel-uek-devel
  • oracle-linux-upgrade-kernel-uek-doc
  • oracle-linux-upgrade-kernel-uek-firmware
  • oracle-linux-upgrade-kernel-uek-headers
  • oracle-linux-upgrade-kernel-uek-tools
  • oracle-linux-upgrade-kernel-uek-tools-libs
  • oracle-linux-upgrade-kernel-uek-tools-libs-devel
  • oracle-linux-upgrade-perf
  • oracle-linux-upgrade-python-perf

References

  • ELSA-2019-4541
  • USN-3901-1
  • USN-3901-2
  • USN-3903-1
  • USN-3903-2
  • CVE-2018-18397

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