Upstream information

CVE-2018-18281 at MITRE

Description

Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having moderate severity.

CVSS v3 Scores
  SUSE
Base Score 5.6
Vector AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Access Vector Local
Access Complexity High
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact None
Availability Impact None
SUSE Bugzilla entry: 1113769 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE CaaS Platform 3.0
  • kernel-default >= 4.4.162-94.69.2
Patchnames:
SUSE-CAASP-3.0-2018-2621
SUSE CaaS Platform ALL
  • kernel-default >= 4.4.162-94.69.2
Patchnames:
SUSE-CAASP-ALL-2018-2621
SUSE Linux Enterprise Build System Kit 12 SP3
  • kernel-zfcpdump >= 4.4.162-94.69.2
Patchnames:
SUSE-SLE-BSK-12-SP3-2018-2621
SUSE Linux Enterprise Desktop 12 SP3
  • kernel-default >= 4.4.162-94.69.2
  • kernel-default-devel >= 4.4.162-94.69.2
  • kernel-default-extra >= 4.4.162-94.69.2
  • kernel-devel >= 4.4.162-94.69.2
  • kernel-macros >= 4.4.162-94.69.2
  • kernel-source >= 4.4.162-94.69.2
  • kernel-syms >= 4.4.162-94.69.2
Patchnames:
SUSE-SLE-DESKTOP-12-SP3-2018-2621
SUSE Linux Enterprise High Availability 12 SP3
  • cluster-md-kmp-default >= 4.4.162-94.69.2
  • dlm-kmp-default >= 4.4.162-94.69.2
  • gfs2-kmp-default >= 4.4.162-94.69.2
  • kernel-default >= 4.4.162-94.69.2
  • ocfs2-kmp-default >= 4.4.162-94.69.2
Patchnames:
SUSE-SLE-HA-12-SP3-2018-2621
SUSE Linux Enterprise Live Patching 12 SP3
  • kgraft-patch-4_4_162-94_69-default >= 1-4.5.2
  • kgraft-patch-SLE12-SP3_Update_21 >= 1-4.5.2
Patchnames:
SUSE-SLE-Live-Patching-12-SP3-2018-2621
SUSE Linux Enterprise Real Time Extension 12 SP3
  • cluster-md-kmp-rt >= 4.4.162-3.29.1
  • dlm-kmp-rt >= 4.4.162-3.29.1
  • gfs2-kmp-rt >= 4.4.162-3.29.1
  • kernel-devel-rt >= 4.4.162-3.29.1
  • kernel-rt >= 4.4.162-3.29.1
  • kernel-rt-base >= 4.4.162-3.29.1
  • kernel-rt-devel >= 4.4.162-3.29.1
  • kernel-rt_debug >= 4.4.162-3.29.1
  • kernel-rt_debug-devel >= 4.4.162-3.29.1
  • kernel-source-rt >= 4.4.162-3.29.1
  • kernel-syms-rt >= 4.4.162-3.29.1
  • ocfs2-kmp-rt >= 4.4.162-3.29.1
Patchnames:
SUSE-SLE-RT-12-SP3-2018-2684
SUSE Linux Enterprise Server 11 SP4
  • kernel-bigmem >= 3.0.101-108.81.1
  • kernel-bigmem-base >= 3.0.101-108.81.1
  • kernel-bigmem-devel >= 3.0.101-108.81.1
  • kernel-default >= 3.0.101-108.81.1
  • kernel-default-base >= 3.0.101-108.81.1
  • kernel-default-devel >= 3.0.101-108.81.1
  • kernel-default-man >= 3.0.101-108.81.1
  • kernel-ec2 >= 3.0.101-108.81.1
  • kernel-ec2-base >= 3.0.101-108.81.1
  • kernel-ec2-devel >= 3.0.101-108.81.1
  • kernel-pae >= 3.0.101-108.81.1
  • kernel-pae-base >= 3.0.101-108.81.1
  • kernel-pae-devel >= 3.0.101-108.81.1
  • kernel-ppc64 >= 3.0.101-108.81.1
  • kernel-ppc64-base >= 3.0.101-108.81.1
  • kernel-ppc64-devel >= 3.0.101-108.81.1
  • kernel-source >= 3.0.101-108.81.1
  • kernel-syms >= 3.0.101-108.81.1
  • kernel-trace >= 3.0.101-108.81.1
  • kernel-trace-base >= 3.0.101-108.81.1
  • kernel-trace-devel >= 3.0.101-108.81.1
  • kernel-xen >= 3.0.101-108.81.1
  • kernel-xen-base >= 3.0.101-108.81.1
  • kernel-xen-devel >= 3.0.101-108.81.1
Patchnames:
slessp4-kernel-source-13863
SUSE Linux Enterprise Server 12 SP3
  • kernel-default >= 4.4.162-94.69.2
  • kernel-default-base >= 4.4.162-94.69.2
  • kernel-default-devel >= 4.4.162-94.69.2
  • kernel-default-man >= 4.4.162-94.69.2
  • kernel-devel >= 4.4.162-94.69.2
  • kernel-macros >= 4.4.162-94.69.2
  • kernel-source >= 4.4.162-94.69.2
  • kernel-syms >= 4.4.162-94.69.2
  • lttng-modules >= 2.7.1-8.6.1
  • lttng-modules-kmp-default >= 2.7.1_k4.4.162_94.69-8.6.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-2018-2621
SUSE Linux Enterprise Server for SAP Applications 11 SP4
  • kernel-bigmem >= 3.0.101-108.81.1
  • kernel-bigmem-base >= 3.0.101-108.81.1
  • kernel-bigmem-devel >= 3.0.101-108.81.1
  • kernel-default >= 3.0.101-108.81.1
  • kernel-default-base >= 3.0.101-108.81.1
  • kernel-default-devel >= 3.0.101-108.81.1
  • kernel-default-man >= 3.0.101-108.81.1
  • kernel-ec2 >= 3.0.101-108.81.1
  • kernel-ec2-base >= 3.0.101-108.81.1
  • kernel-ec2-devel >= 3.0.101-108.81.1
  • kernel-pae >= 3.0.101-108.81.1
  • kernel-pae-base >= 3.0.101-108.81.1
  • kernel-pae-devel >= 3.0.101-108.81.1
  • kernel-ppc64 >= 3.0.101-108.81.1
  • kernel-ppc64-base >= 3.0.101-108.81.1
  • kernel-ppc64-devel >= 3.0.101-108.81.1
  • kernel-source >= 3.0.101-108.81.1
  • kernel-syms >= 3.0.101-108.81.1
  • kernel-trace >= 3.0.101-108.81.1
  • kernel-trace-base >= 3.0.101-108.81.1
  • kernel-trace-devel >= 3.0.101-108.81.1
  • kernel-xen >= 3.0.101-108.81.1
  • kernel-xen-base >= 3.0.101-108.81.1
  • kernel-xen-devel >= 3.0.101-108.81.1
Patchnames:
slessp4-kernel-source-13863
SUSE Linux Enterprise Server for SAP Applications 12 SP3
  • kernel-default >= 4.4.162-94.69.2
  • kernel-default-base >= 4.4.162-94.69.2
  • kernel-default-devel >= 4.4.162-94.69.2
  • kernel-default-man >= 4.4.162-94.69.2
  • kernel-devel >= 4.4.162-94.69.2
  • kernel-macros >= 4.4.162-94.69.2
  • kernel-source >= 4.4.162-94.69.2
  • kernel-syms >= 4.4.162-94.69.2
  • lttng-modules >= 2.7.1-8.6.1
  • lttng-modules-kmp-default >= 2.7.1_k4.4.162_94.69-8.6.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-2018-2621
SUSE Linux Enterprise Software Development Kit 11 SP4
  • kernel-docs >= 3.0.101-108.81.1
Patchnames:
sdksp4-kernel-source-13863
SUSE Linux Enterprise Software Development Kit 12 SP3
  • kernel-docs >= 4.4.162-94.69.2
  • kernel-obs-build >= 4.4.162-94.69.2
Patchnames:
SUSE-SLE-SDK-12-SP3-2018-2621
SUSE Linux Enterprise Workstation Extension 12 SP3
  • kernel-default >= 4.4.162-94.69.2
  • kernel-default-extra >= 4.4.162-94.69.2
Patchnames:
SUSE-SLE-WE-12-SP3-2018-2621

List of packages in QA

Product(s) Package(s)
SUSE Linux Enterprise Real Time Extension 11 SP4
  • kernel-rt >= 3.0.101.rt130-69.39.1
  • kernel-rt-base >= 3.0.101.rt130-69.39.1
  • kernel-rt-devel >= 3.0.101.rt130-69.39.1
  • kernel-rt_trace >= 3.0.101.rt130-69.39.1
  • kernel-rt_trace-base >= 3.0.101.rt130-69.39.1
  • kernel-rt_trace-devel >= 3.0.101.rt130-69.39.1
  • kernel-source-rt >= 3.0.101.rt130-69.39.1
  • kernel-syms-rt >= 3.0.101.rt130-69.39.1


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE Linux Enterprise Desktop 12 SP3 kernel-source Released
SUSE Linux Enterprise Module for Basesystem 15 GA kernel-source Affected
SUSE Linux Enterprise Module for Development Tools 15 GA kernel-source Affected
SUSE Linux Enterprise Server 11 SP3 LTSS kernel-source Affected
SUSE Linux Enterprise Server 11 SP4 kernel-source Released
SUSE Linux Enterprise Server 12 GA LTSS kernel-source Affected
SUSE Linux Enterprise Server 12 SP2 LTSS kernel-source Affected
SUSE Linux Enterprise Server 12 SP3 kernel-source Released
SUSE Linux Enterprise Server for SAP Applications 11 SP3 kernel-source Affected
SUSE Linux Enterprise Server for SAP Applications 12 GA kernel-source Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 kernel-source Affected