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Unscored CVE-2024-50017 EUVD-2024-45235GHSA-h8wp-xf43-pm3w

x86/mm/ident_map: Use gbpages only where full GB page should be mapped.

Published Oct 21, 2024 · Updated Sep 14, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: kernel Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.15 Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 Package: linux-ibm-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-lowlatency Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.11 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

x86/mm/ident_map: Use gbpages only where full GB page should be mapped.

When ident_pud_init() uses only GB pages to create identity maps, large
ranges of addresses not actually requested can be included in the resulting
table; a 4K request will map a full GB. This can include a lot of extra
address space past that requested, including areas marked reserved by the
BIOS. That allows processor speculation into reserved regions, that on UV
systems can cause system halts.

Only use GB pages when map creation requests include the full GB page of
space. Fall back to using smaller 2M pages when only portions of a GB page
are included in the request.

No attempt is made to coalesce mapping requests. If a request requires a
map entry at the 2M (pmd) level, subsequent mapping requests within the
same 1G region will also be at the pmd level, even if adjacent or
overlapping such requests could have been combined to map a full GB page.
Existing usage starts with larger regions and then adds smaller regions, so
this should not have any great consequence.

Affected products

VendorProductAffectedFixed
Linux Linux 4.12 5.15.221

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 6.11.4-1 —
Debian 13 linux 6.11.4-1 —
Debian 12 linux 6.1.190-1 —
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1103.105 —
Ubuntu 24.04 LTS linux 6.8.0-54.56 USN-7301-1
Ubuntu 24.04 LTS linux-aws 6.8.0-1023.25 USN-7311-1
Ubuntu 24.04 LTS linux-azure 6.8.0-1025.30 USN-7384-1
Ubuntu 24.04 LTS linux-azure-6.11 6.11.0-1012.12~24.04.1 —
Ubuntu 24.04 LTS linux-azure-nvidia 6.8.0-1014.15 USN-7468-1
Ubuntu 24.04 LTS linux-gcp 6.8.0-1024.26 USN-7304-1
Ubuntu 24.04 LTS linux-gcp-6.11 6.11.0-1011.11~24.04.1 —
Ubuntu 24.04 LTS linux-gke +1 6.8.0-1019.23 USN-7304-1, USN-7303-3
Ubuntu 24.04 LTS linux-gkeop 6.8.0-1006.8 USN-7304-1
Ubuntu 24.04 LTS linux-ibm 6.8.0-1022.22 USN-7385-1
Ubuntu 24.04 LTS linux-lowlatency 6.8.0-54.56.1 USN-7301-1
Ubuntu 24.04 LTS linux-nvidia 6.8.0-1022.25 USN-7303-1
Ubuntu 24.04 LTS linux-nvidia-6.11 6.11.0-1007.7 —
Ubuntu 24.04 LTS linux-nvidia-lowlatency 6.8.0-1022.25.2 USN-7303-1
Ubuntu 24.04 LTS linux-oem-6.11 6.11.0-1015.15 USN-7310-1
Ubuntu 24.04 LTS linux-oem-6.8 6.8.0-1024.24 USN-7386-1
Ubuntu 24.04 LTS linux-oracle 6.8.0-1020.21 USN-7303-2
Ubuntu 24.04 LTS linux-realtime No fix yet —
Ubuntu 24.04 LTS linux-riscv 6.8.0-53.55.1 —
Ubuntu 24.04 LTS linux-xilinx 6.8.0-1017.18 —
Ubuntu 22.04 LTS linux 5.15.0-202.212 USN-8961-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1119.126 USN-8961-1
Ubuntu 22.04 LTS linux-aws-6.8 6.8.0-1023.25~22.04.1 USN-7311-1
Ubuntu 22.04 LTS linux-azure 5.15.0-1125.134 USN-8961-1
Ubuntu 22.04 LTS linux-azure-6.8 6.8.0-1025.30~22.04.1 USN-7384-2
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1124.133 USN-8962-1
Ubuntu 22.04 LTS linux-gcp 5.15.0-1120.130 USN-8961-1
Ubuntu 22.04 LTS linux-gcp-6.8 6.8.0-1024.26~22.04.1 USN-7303-3
Ubuntu 22.04 LTS linux-gke 5.15.0-1115.121 USN-8961-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1102.110 USN-8961-1
Ubuntu 22.04 LTS linux-hwe-6.8 6.8.0-57.59~22.04.1 USN-7403-1
Ubuntu 22.04 LTS linux-ibm 5.15.0-1113.117 USN-8961-1
Ubuntu 22.04 LTS linux-ibm-6.8 6.8.0-1023.23~22.04.1 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1114.120 USN-8961-1
Ubuntu 22.04 LTS linux-kvm 5.15.0-1111.116 USN-8961-1
Ubuntu 22.04 LTS linux-lowlatency 5.15.0-197.207 USN-8961-1
Ubuntu 22.04 LTS linux-lowlatency-hwe-6.8 6.8.0-54.56.1~22.04.1 USN-7301-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1114.115 USN-8961-1
Ubuntu 22.04 LTS linux-nvidia-6.8 6.8.0-1022.25~22.04.2 USN-7303-1
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1070.72 USN-8963-1
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1059.59 USN-8963-1
Ubuntu 22.04 LTS linux-oracle 5.15.0-1116.122 USN-8961-1
Ubuntu 22.04 LTS linux-oracle-6.8 6.8.0-1020.21~22.04.1 USN-7303-2
Ubuntu 22.04 LTS linux-raspi 5.15.0-1113.116 USN-9029-1
Ubuntu 22.04 LTS linux-riscv +33 No fix yet —
Ubuntu 22.04 LTS linux-riscv-6.8 6.8.0-53.55.1~22.04.1 —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Show 14 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2018.19 —
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1016.17 —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1111.115 USN-8961-1
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1118.127 USN-8961-1
Ubuntu Pro Realtime 22.04 LTS linux-realtime-6.8 6.8.1-1016.17~22.04.1 —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips 6.8.0-78.78+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1119.126+fips1 USN-8961-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1125.134+fips1 USN-8961-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-202.212+fips1 USN-8961-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1120.130+fips1 USN-8961-1
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 20.04 LTS linux +10 No fix yet —
Ubuntu Pro 20.04 LTS linux-aws-5.15 5.15.0-1119.126~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-azure-5.15 5.15.0-1125.134~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-azure-fde-5.15 5.15.0-1124.133~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-gcp-5.15 5.15.0-1120.130~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-hwe-5.15 5.15.0-202.212~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-ibm-5.15 5.15.0-1113.117~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-intel-iotg-5.15 5.15.0-1114.120~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-lowlatency-hwe-5.15 5.15.0-197.207~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1070.72~20.04.1 USN-8963-1
Ubuntu Pro 20.04 LTS linux-oracle-5.15 5.15.0-1116.122~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-riscv-5.15 5.15.0-1113.117~20.04.2 —
Ubuntu Pro 18.04 LTS linux +12 No fix yet —
Ubuntu Pro 16.04 LTS linux-gcp +4 No fix yet —
Ubuntu Pro 14.04 LTS linux-azure No fix yet —
ReleasePackageFixed inAdvisory
SLES 15 SP6 kernel-64kb +6 6.4.0-150600.23.30.1 SUSE-SU-2024:4318-1
SLES 15 SP6 kernel-azure 6.4.0-150600.8.17.2 SUSE-SU-2024:3984-1
SLES 15 SP6 kernel-coco +3 6.4.0-15061.9.coco15sp6.1 SUSE-SU-2024:4387-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.30.1.150600.12.12.6 SUSE-SU-2024:4318-1
SLES 15 SP6 kernel-syms-azure +1 6.4.0-150600.8.17.1 SUSE-SU-2024:3984-1
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.88.1 SUSE-SU-2024:4364-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.75.1 SUSE-SU-2024:4376-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.88.1.150500.6.39.4 SUSE-SU-2024:4364-1
SLES 15 SP4 kernel-64kb +6 5.14.21-150400.24.144.1 SUSE-SU-2024:4346-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.144.1.150400.24.70.1 SUSE-SU-2024:4346-1
Show 14 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.144.1.150400.24.70.1 SUSE-SU-2024:4346-1
SLES for SAP 15 SP4 kernel-docs +4 5.14.21-150400.24.144.1 SUSE-SU-2024:4346-1
SLE Micro 6.1 kernel-default-base 6.4.0-24.1.21.4 SUSE-SU-2025:20247-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_4 1-1.1 SUSE-SU-2025:20246-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_4 1-1.2 SUSE-SU-2025:20247-1
SLE Micro 6.1 kernel-rt +1 6.4.0-22.1 SUSE-SU-2025:20246-1
SLE Micro 6.1 kernel-source +2 6.4.0-24.1 SUSE-SU-2025:20247-1
SLE Micro 6.0 kernel-default-base 6.4.0-24.1.21.4 SUSE-SU-2025:20164-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_4 1-1.1 SUSE-SU-2025:20163-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_4 1-1.2 SUSE-SU-2025:20164-1
SLE Micro 6.0 kernel-rt +1 6.4.0-22.1 SUSE-SU-2025:20163-1
SLE Micro 6.0 kernel-source +2 6.4.0-24.1 SUSE-SU-2025:20164-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.88.1 SUSE-SU-2024:4364-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.88.1.150500.6.39.4 SUSE-SU-2024:4364-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.79.1 SUSE-SU-2024:4315-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.144.1 SUSE-SU-2024:4346-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.144.1.150400.24.70.1 SUSE-SU-2024:4346-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.103.1 SUSE-SU-2024:4345-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.144.1 SUSE-SU-2024:4346-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.144.1.150400.24.70.1 SUSE-SU-2024:4346-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.103.1 SUSE-SU-2024:4345-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.30.1 SUSE-SU-2024:4318-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_5 1-150600.1.3.1 SUSE-SU-2024:3986-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_6 1-150600.13.3.5 SUSE-SU-2024:4318-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.88.1 SUSE-SU-2024:4364-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5-RT_Update_23 1-150500.11.3.1 SUSE-SU-2024:4315-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_21 1-150500.11.5.1 SUSE-SU-2024:4364-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.144.1 SUSE-SU-2024:4346-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_34 1-150400.9.3.1 SUSE-SU-2024:4346-1
SLE HPC 15 SP4 kernel-64kb +5 5.14.21-150400.24.144.1 SUSE-SU-2024:4346-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.144.1.150400.24.70.1 SUSE-SU-2024:4346-1
SUSE Real Time Module 15 SP6 kernel-rt +3 6.4.0-150600.10.17.1 SUSE-SU-2024:3986-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.79.1 SUSE-SU-2024:4315-1
SUSE Manager Server 4.3 kernel-default-base 5.14.21-150400.24.144.1.150400.24.70.1 SUSE-SU-2024:4346-1
SUSE Manager Server 4.3 kernel-syms +3 5.14.21-150400.24.144.1 SUSE-SU-2024:4346-1
SUSE Manager Proxy 4.3 kernel-default-base 5.14.21-150400.24.144.1.150400.24.70.1 SUSE-SU-2024:4346-1
SUSE Manager Proxy 4.3 kernel-syms +2 5.14.21-150400.24.144.1 SUSE-SU-2024:4346-1
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed kernel-source 6.11.8-1.1 openSUSE-SU-2024:14500-1
openSUSE Tumbleweed kernel-source-longterm 6.12.11-1.1 openSUSE-SU-2025:14705-1
openSUSE Leap 15.6 dtb-aarch64 +10 6.4.0-150600.23.30.1 SUSE-SU-2024:4318-1
openSUSE Leap 15.6 kernel-azure 6.4.0-150600.8.17.2 SUSE-SU-2024:3984-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.30.1.150600.12.12.6 SUSE-SU-2024:4318-1
openSUSE Leap 15.6 kernel-rt +3 6.4.0-150600.10.17.1 SUSE-SU-2024:3986-1
openSUSE Leap 15.6 kernel-syms-azure +1 6.4.0-150600.8.17.1 SUSE-SU-2024:3984-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.75.1 SUSE-SU-2024:4376-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.79.1 SUSE-SU-2024:4315-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.5 kernel-rt 5.14.21-150500.13.79.1 SUSE-SU-2024:4315-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.1.79-99.164 1.0-0.amzn2023 ALAS2023-2024-549
Amazon Linux 2023 perf +14 6.1.79-99.164.amzn2023 ALAS2023-2024-549
Amazon Linux 2 kernel-livepatch-4.14.343-259.562 1.0-0.amzn2 ALAS2-2024-2549
Amazon Linux 2 perf +8 4.14.343-259.562.amzn2 ALAS2-2024-2549

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 kernel 6.6.78.1-1 —
Azure Linux 2 (CBL-Mariner) kernel No fix yet —

Advisories 35

References