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OpenAdvisories

Description

A flaw was found in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages. This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the system.

Affected products

VendorProductAffectedFixed
— Kernel All versions after 4.5-rc1. —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 5.6.14-2 —
Debian 13 linux 5.6.14-2 —
Debian 12 linux 5.6.14-2 —
Debian 10 linux 4.19.118-2+deb10u1 DSA-4699-1
Debian 9 linux 4.9.210-1+deb9u1 DSA-4698-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Debian 8 linux-4.9 4.9.210-1+deb9u1~deb8u1 DLA-2242-1
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux-riscv +2 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-45.49 USN-4483-1
Ubuntu 20.04 LTS linux-aws +2 5.4.0-1022.22 USN-4483-1
Ubuntu 20.04 LTS linux-azure 5.4.0-1023.23 USN-4483-1
Ubuntu 20.04 LTS linux-gke +2 No fix yet —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1021.21 USN-4483-1
Ubuntu 20.04 LTS linux-oem-5.6 5.6.0-1018.18 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1016.17 USN-4483-1
Ubuntu 20.04 LTS linux-riscv 5.4.0-31.35 —
Ubuntu 18.04 LTS linux 4.15.0-112.113 USN-4426-1
Ubuntu 18.04 LTS linux-aws 4.15.0-1079.83 USN-4426-1
Ubuntu 18.04 LTS linux-aws-5.3 5.3.0-1032.34~18.04.2 USN-4440-1
Ubuntu 18.04 LTS linux-aws-5.4 +2 5.4.0-1022.22~18.04.1 USN-4483-1
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1092.102 USN-4426-1
Ubuntu 18.04 LTS linux-azure-5.3 5.3.0-1034.35~18.04.1 USN-4440-1
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1023.23~18.04.1 USN-4483-1
Ubuntu 18.04 LTS linux-gcp +6 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1080.90 USN-4426-1
Ubuntu 18.04 LTS linux-gcp-5.3 +1 5.3.0-1032.34~18.04.1 USN-4440-1
Ubuntu 18.04 LTS linux-gke-4.15 4.15.0-1066.69 USN-4426-1
Ubuntu 18.04 LTS linux-gke-5.0 5.0.0-1045.46 USN-4439-1
Ubuntu 18.04 LTS linux-hwe 5.3.0-64.58~18.04.1 USN-4440-1
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-45.49~18.04.2 USN-4483-1
Ubuntu 18.04 LTS linux-kvm 4.15.0-1071.72 USN-4426-1
Ubuntu 18.04 LTS linux-oem 4.15.0-1093.103 USN-4426-1
Ubuntu 18.04 LTS linux-oem-osp1 5.0.0-1065.70 USN-4439-1
Ubuntu 18.04 LTS linux-oracle 4.15.0-1050.54 USN-4426-1
Ubuntu 18.04 LTS linux-oracle-5.3 5.3.0-1030.32~18.04.1 USN-4440-1
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1016.17~18.04.1 USN-4483-1
Ubuntu 18.04 LTS linux-raspi2 4.15.0-1067.71 USN-4426-1
Ubuntu 18.04 LTS linux-raspi2-5.3 5.3.0-1030.32~18.04.2 USN-4440-1
Ubuntu 18.04 LTS linux-snapdragon 4.15.0-1083.91 USN-4426-1
Ubuntu 16.04 LTS linux-aws-hwe 4.15.0-1079.83~16.04.1 USN-4426-1
Ubuntu 16.04 LTS linux-azure 4.15.0-1092.102~16.04.1 USN-4426-1
Ubuntu 16.04 LTS linux-gcp 4.15.0-1080.90~16.04.1 USN-4426-1
Ubuntu 16.04 LTS linux-hwe 4.15.0-112.113~16.04.1 USN-4426-1
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu 16.04 LTS linux-oracle 4.15.0-1050.54~16.04.1 USN-4426-1
Show 8 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro FIPS 20.04 LTS linux-aws-fips +2 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-aws-fips +2 No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1069.73+fips2 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1073.76+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1067.71~20.04.1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2024.24 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2006.7 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1037.42 —
Ubuntu Pro 20.04 LTS linux 5.4.0-45.49 LSN-0069-1
Ubuntu Pro 20.04 LTS linux-aws +1 5.4.0-1022.22 LSN-0069-1
Ubuntu Pro 20.04 LTS linux-azure 5.4.0-1023.23 LSN-0069-1
Ubuntu Pro 18.04 LTS linux 4.15.0-112.113 LSN-0069-1
Ubuntu Pro 18.04 LTS linux-aws 4.15.0-1079.83 LSN-0069-1
Ubuntu Pro 18.04 LTS linux-oem 4.15.0-1093.103 LSN-0069-1
Ubuntu Pro 16.04 LTS linux 4.4.0-184.214 LSN-0069-1
Ubuntu Pro 16.04 LTS linux-aws 4.4.0-1109.120 LSN-0069-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1092.102~14.04.1 —
ReleasePackageFixed inAdvisory
RHEL 8 kernel-rt +12 4.18.0-193.13.2.rt13.65.el8_2 RHSA-2020:3016
RHEL 8 perf +26 4.18.0-193.13.2.el8_2 RHSA-2020:3010
RHEL 7 kernel +15 3.10.0-1127.18.2.el7 RHSA-2020:3220
RHEL 7 kernel-rt +10 3.10.0-1127.18.2.rt56.1116.el7 RHSA-2020:3221
RHEL 7 perf +3 3.10.0-957.58.2.el7 RHSA-2020:3226, RHSA-2020:3220
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 8.1 EUS perf +26 4.18.0-147.24.2.el8_1 RHSA-2020:3222
RHEL 8.0 E4S perf +18 4.18.0-80.27.1.el8_0 RHSA-2020:3041
RHEL 7.7 EUS perf +19 3.10.0-1062.33.1.el7 RHSA-2020:3598
RHEL 7.6 EUS perf +19 3.10.0-957.58.2.el7 RHSA-2020:3226
ReleasePackageFixed inAdvisory
SLES 15 SP1 kernel-azure +2 4.12.14-8.33.1 SUSE-SU-2020:1604-1
SLES 15 SP1 kernel-docs +5 4.12.14-197.45.1 SUSE-SU-2020:1599-1
SLES 15 kernel-docs +6 4.12.14-150.52.1 SUSE-SU-2020:1663-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.16.1 SUSE-SU-2020:1587-1
SLES 12 SP5 kernel-docs +4 4.12.14-122.23.1 SUSE-SU-2020:1602-1
SLES 12 SP4 kernel-azure +2 4.12.14-6.43.1 SUSE-SU-2020:1603-1
SLES 12 SP4 kernel-docs +4 4.12.14-95.54.1 SUSE-SU-2020:1605-1
SLES 12 SP3 kernel-syms +2 4.4.180-94.121.1 SUSE-SU-2020:1596-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_26 10-2.1 SUSE-SU-2020:1784-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_27 +1 8-2.1 SUSE-SU-2020:1784-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_29 6-2.1 SUSE-SU-2020:1781-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_30 5-2.1 SUSE-SU-2020:1781-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_31 2-2.1 SUSE-SU-2020:1779-1
SLES 12 SP3 kgraft-patch-SLE12-SP3_Update_32 1-4.5.1 SUSE-SU-2020:1596-1
Show 19 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES 12 SP2 kernel-syms +2 4.4.121-92.135.1 SUSE-SU-2020:1597-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_30 10-2.1 SUSE-SU-2020:1767-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_31 9-2.1 SUSE-SU-2020:1767-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_32 8-2.1 SUSE-SU-2020:1767-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_33 6-2.1 SUSE-SU-2020:1764-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_34 3-2.1 SUSE-SU-2020:1764-1
SLES 12 SP2 kgraft-patch-SLE12-SP2_Update_35 1-3.5.1 SUSE-SU-2020:1597-1
SLES for SAP 15 kernel-docs +5 4.12.14-150.52.1 SUSE-SU-2020:1663-1
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.16.1 SUSE-SU-2020:1587-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.23.1 SUSE-SU-2020:1602-1
SLES for SAP 12 SP4 kernel-azure +2 4.12.14-6.43.1 SUSE-SU-2020:1603-1
SLES for SAP 12 SP4 kernel-syms +2 4.12.14-95.54.1 SUSE-SU-2020:1605-1
SLES for SAP 12 SP3 kernel-syms +2 4.4.180-94.121.1 SUSE-SU-2020:1596-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_26 10-2.1 SUSE-SU-2020:1784-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_27 +1 8-2.1 SUSE-SU-2020:1784-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_29 6-2.1 SUSE-SU-2020:1781-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_30 5-2.1 SUSE-SU-2020:1781-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_31 2-2.1 SUSE-SU-2020:1779-1
SLES for SAP 12 SP3 kgraft-patch-SLE12-SP3_Update_32 1-4.5.1 SUSE-SU-2020:1596-1
SLES for SAP 12 SP2 kernel-syms +2 4.4.121-92.135.1 SUSE-SU-2020:1597-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_30 10-2.1 SUSE-SU-2020:1767-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_31 9-2.1 SUSE-SU-2020:1767-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_32 8-2.1 SUSE-SU-2020:1767-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_33 6-2.1 SUSE-SU-2020:1764-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_34 3-2.1 SUSE-SU-2020:1764-1
SLES for SAP 12 SP2 kgraft-patch-SLE12-SP2_Update_35 1-3.5.1 SUSE-SU-2020:1597-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.13.1 SUSE-SU-2020:2478-1
SLE Real Time 12 SP4 kernel-rt +3 4.12.14-8.23.1 SUSE-SU-2020:2156-1
SLE Live Patching 15 SP1 kernel-default 4.12.14-197.45.1 SUSE-SU-2020:1599-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_0 12-34.1 SUSE-SU-2020:1656-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_1 11-2.1 SUSE-SU-2020:1656-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_11 3-2.1 SUSE-SU-2020:1646-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_12 1-3.5.1 SUSE-SU-2020:1599-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_2 10-2.1 SUSE-SU-2020:1656-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_3 +1 8-2.1 SUSE-SU-2020:1671-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_5 +1 7-2.1 SUSE-SU-2020:1646-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_7 +1 5-2.1 SUSE-SU-2020:1646-1
SLE Live Patching 15 SP1 kernel-livepatch-SLE15-SP1_Update_9 +1 4-2.1 SUSE-SU-2020:1646-1
SLE Live Patching 15 kernel-default 4.12.14-150.52.1 SUSE-SU-2020:1663-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_11 9-2.1 SUSE-SU-2020:1671-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_12 +1 8-2.1 SUSE-SU-2020:1671-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_14 +1 7-2.1 SUSE-SU-2020:1646-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_16 +1 5-2.1 SUSE-SU-2020:1646-1
SLE Live Patching 15 kernel-livepatch-SLE15_Update_18 1-1.5.1 SUSE-SU-2020:1663-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.23.1 SUSE-SU-2020:1602-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_0 5-12.2 SUSE-SU-2020:1775-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_1 +1 5-2.1 SUSE-SU-2020:1775-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_3 4-2.1 SUSE-SU-2020:1775-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_4 3-2.1 SUSE-SU-2020:1775-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_5 1-8.3.1 SUSE-SU-2020:1602-1
SLE Live Patching 12 SP4 kernel-default 4.12.14-95.54.1 SUSE-SU-2020:1605-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_10 +1 5-2.1 SUSE-SU-2020:1754-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_12 4-2.1 SUSE-SU-2020:1754-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_13 3-2.1 SUSE-SU-2020:2508-1, SUSE-SU-2020:1754-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_14 1-6.3.1 SUSE-SU-2020:1605-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_5 9-2.1 SUSE-SU-2020:1758-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_6 +1 8-2.1 SUSE-SU-2020:1758-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_8 7-2.1 SUSE-SU-2020:1754-1
SLE Live Patching 12 SP4 kgraft-patch-SLE12-SP4_Update_9 6-2.1 SUSE-SU-2020:1754-1
SLE HPC 15 kernel-docs +5 4.12.14-150.52.1 SUSE-SU-2020:1663-1
SUSE Real Time Module 15 SP1 kernel-rt +3 4.12.14-14.28.1 SUSE-SU-2020:2487-1
SUSE OpenStack Cloud Crowbar 8 kernel-syms +2 4.4.180-94.121.1 SUSE-SU-2020:1596-1
SUSE OpenStack Cloud Crowbar 8 kgraft-patch-SLE12-SP3_Update_32 1-4.5.1 SUSE-SU-2020:1596-1
SUSE OpenStack Cloud 8 kernel-syms +2 4.4.180-94.121.1 SUSE-SU-2020:1596-1
SUSE OpenStack Cloud 8 kgraft-patch-SLE12-SP3_Update_32 1-4.5.1 SUSE-SU-2020:1596-1
SUSE OpenStack Cloud 7 kernel-syms +2 4.4.121-92.135.1 SUSE-SU-2020:1597-1
SUSE OpenStack Cloud 7 kgraft-patch-SLE12-SP2_Update_35 1-3.5.1 SUSE-SU-2020:1597-1
SUSE HPE Helion OpenStack 8 kernel-syms +2 4.4.180-94.121.1 SUSE-SU-2020:1596-1
SUSE HPE Helion OpenStack 8 kgraft-patch-SLE12-SP3_Update_32 1-4.5.1 SUSE-SU-2020:1596-1
SUSE Enterprise Storage 5 kernel-syms +2 4.4.180-94.121.1 SUSE-SU-2020:1596-1
SUSE Enterprise Storage 5 kgraft-patch-SLE12-SP3_Update_32 1-4.5.1 SUSE-SU-2020:1596-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.2 kernel-rt +3 5.3.18-lp152.3.5.1 openSUSE-SU-2021:0242-1
openSUSE Leap 15.1 kernel-docs 4.12.14-lp151.28.52.2 openSUSE-SU-2020:0801-1
openSUSE Leap 15.1 kernel-obs-qa +1 4.12.14-lp151.28.52.3 openSUSE-SU-2020:0801-1
openSUSE Leap 15.1 kernel-syms +5 4.12.14-lp151.28.52.1 openSUSE-SU-2020:0801-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2 kernel-livepatch-4.14.186-146.268 1.0-0.amzn2 ALAS2-2020-1465
Amazon Linux 2 perf +8 4.14.186-146.268.amzn2 ALAS2-2020-1465

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 8 perf +19 4.18.0-193.13.2.el8_2 ELSA-2020-3010
Oracle Linux 7 kernel-uek +8 4.14.35-1902.304.6.el7uek ELSA-2020-5756, ELSA-2020-5755
Oracle Linux 7 perf +12 3.10.0-1127.18.2.el7 ELSA-2020-5756, ELSA-2020-5755, ELSA-2020-3220

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 47

References