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SUSE: CVE-2018-18397: SUSE Linux Security Advisory

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SUSE: CVE-2018-18397: SUSE Linux Security Advisory

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:P/A:N)
Published
12/12/2018
Created
03/19/2019
Added
01/18/2019
Modified
02/04/2022

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)

  • suse-upgrade-cluster-md-kmp-default
  • suse-upgrade-dlm-kmp-default
  • suse-upgrade-gfs2-kmp-default
  • suse-upgrade-kernel-azure-base
  • suse-upgrade-kernel-default
  • suse-upgrade-kernel-default-extra
  • suse-upgrade-kernel-default-man
  • suse-upgrade-kernel-devel-azure
  • suse-upgrade-kernel-docs
  • suse-upgrade-kernel-obs-build
  • suse-upgrade-kernel-source-azure
  • suse-upgrade-ocfs2-kmp-default

References

  • SUSE-SU-2019:0150-1
  • SUSE-SU-2019:0196-1
  • SUSE-SU-2019:0222-1
  • SUSE-SU-2019:0224-1
  • USN-3901-1
  • USN-3901-2
  • USN-3903-1
  • USN-3903-2
  • CVE-2018-18397
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