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Unscored CVE-2024-26906 EUVD-2024-24168GHSA-h4jh-5vqp-vw3p

x86/mm: Disallow vsyscall page read for copy_from_kernel_nofault()

Published Apr 17, 2024 · Updated Oct 15, 2026 · Assigned by Linux

Vendor: Linux Product: Linux 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-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-fips Package: linux-azure 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-6.2 Package: linux-azure-6.5 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp 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-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 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-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 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-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 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-6.5 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-5.8 Package: linux-oracle-6.5 Package: linux-raspi Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime 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-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

x86/mm: Disallow vsyscall page read for copy_from_kernel_nofault()

When trying to use copy_from_kernel_nofault() to read vsyscall page
through a bpf program, the following oops was reported:

BUG: unable to handle page fault for address: ffffffffff600000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 3231067 P4D 3231067 PUD 3233067 PMD 3235067 PTE 0
Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 1 PID: 20390 Comm: test_progs ...... 6.7.0+ #58
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) ......
RIP: 0010:copy_from_kernel_nofault+0x6f/0x110
......
Call Trace:
<TASK>
? copy_from_kernel_nofault+0x6f/0x110
bpf_probe_read_kernel+0x1d/0x50
bpf_prog_2061065e56845f08_do_probe_read+0x51/0x8d
trace_call_bpf+0xc5/0x1c0
perf_call_bpf_enter.isra.0+0x69/0xb0
perf_syscall_enter+0x13e/0x200
syscall_trace_enter+0x188/0x1c0
do_syscall_64+0xb5/0xe0
entry_SYSCALL_64_after_hwframe+0x6e/0x76
</TASK>
......
---[ end trace 0000000000000000 ]---

The oops is triggered when:

1) A bpf program uses bpf_probe_read_kernel() to read from the vsyscall
page and invokes copy_from_kernel_nofault() which in turn calls
__get_user_asm().

2) Because the vsyscall page address is not readable from kernel space,
a page fault exception is triggered accordingly.

3) handle_page_fault() considers the vsyscall page address as a user
space address instead of a kernel space address. This results in the
fix-up setup by bpf not being applied and a page_fault_oops() is invoked
due to SMAP.

Considering handle_page_fault() has already considered the vsyscall page
address as a userspace address, fix the problem by disallowing vsyscall
page read for copy_from_kernel_nofault().

Affected products

VendorProductAffectedFixed
Linux Linux 5.5 5.10.214

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 6.7.12-1 —
Debian 13 linux 6.7.12-1 —
Debian 12 linux 6.1.85-1 —
Debian 11 linux 5.10.216-1 DSA-5681-1
Debian 10 linux-5.10 5.10.216-1~deb10u1 DLA-3842-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1044.46 —
Ubuntu 22.04 LTS linux 5.15.0-112.122 USN-6820-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1063.69 USN-6821-3
Ubuntu 22.04 LTS linux-azure 5.15.0-1066.75 USN-6821-4
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1067.76.1 USN-6821-4
Ubuntu 22.04 LTS linux-gcp 5.15.0-1062.70 USN-6820-1
Ubuntu 22.04 LTS linux-gke 5.15.0-1060.66 USN-6821-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1046.53 USN-6821-2
Ubuntu 22.04 LTS linux-ibm 5.15.0-1056.59 USN-6821-1
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1058.64 USN-6821-1
Ubuntu 22.04 LTS linux-kvm 5.15.0-1060.65 USN-6821-2
Ubuntu 22.04 LTS linux-lowlatency 5.15.0-110.120 USN-6820-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1058.59 USN-6820-2
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1026.26 —
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1015.15 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1061.67 USN-6821-1
Ubuntu 22.04 LTS linux-raspi 5.15.0-1058.61 USN-6919-1
Ubuntu 22.04 LTS linux-riscv +31 No fix yet —
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1030.34 USN-6820-1
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1063.69~20.04.1 USN-6821-3
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1065.74~20.04.1 —
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1062.70~20.04.1 USN-6820-1
Ubuntu 20.04 LTS linux-gke +26 No fix yet —
Ubuntu 20.04 LTS linux-gkeop-5.15 5.15.0-1046.53~20.04.1 USN-6821-2
Ubuntu 20.04 LTS linux-hwe-5.15 5.15.0-113.123~20.04.1 USN-6871-1
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1057.60~20.04.1 USN-6892-1
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1058.64~20.04.1 USN-6828-1
Ubuntu 20.04 LTS linux-lowlatency-hwe-5.15 5.15.0-110.120~20.04.1 USN-6820-1
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1027.27~20.04.1 —
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1061.67~20.04.1 —
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1059.63~20.04.1 —
Ubuntu 18.04 LTS linux-gcp +13 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Show 7 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2002.2 —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1056.58 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1064.72 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1063.69+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1065.74+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-111.121+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1062.70+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips No fix yet —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 20.04 LTS linux-azure No fix yet —
Ubuntu Pro 18.04 LTS linux-azure-5.4 No fix yet —
ReleasePackageFixed inAdvisory
RHEL 9 bpftool 7.4.0-503.11.1.el9_5 RHSA-2024:9315
RHEL 9 rv +67 5.14.0-503.11.1.el9_5 RHSA-2024:9315
RHEL 8 kernel-rt +12 4.18.0-553.8.1.rt7.349.el8_10 RHSA-2024:4352
RHEL 8 perf +26 4.18.0-553.8.1.el8_10 RHSA-2024:4211
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 9.4 EUS bpftool 7.3.0-427.44.1.el9_4 RHSA-2024:9546
RHEL 9.4 EUS rv +64 5.14.0-427.44.1.el9_4 RHSA-2024:9546
RHEL 9.2 EUS bpftool 7.0.0-284.92.1.el9_2 RHSA-2024:9497
RHEL 9.2 EUS kernel-rt +14 5.14.0-284.92.1.rt14.377.el9_2 RHSA-2024:9498
RHEL 9.2 EUS perf +47 5.14.0-284.92.1.el9_2 RHSA-2024:9497

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 8 kernel-rt +11 4.18.0-553.8.1.rt7.349.el8_10 ALSA-2024:4352
AlmaLinux 8 perf +24 4.18.0-553.8.1.el8_10 ALSA-2024:4211

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 8 kernel 4.18.0-553.8.1.el8_10 RLSA-2024:4211
Rocky Linux 8 kernel-rt 4.18.0-553.8.1.rt7.349.el8_10 RLSA-2024:4352
ReleasePackageFixed inAdvisory
SLES 15 SP6 kernel-64kb +3 6.4.0-150600.23.7.3 SUSE-SU-2024:2203-1
SLES 15 SP6 kernel-azure +1 6.4.0-150600.8.5.4 SUSE-SU-2024:2135-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.7.3.150600.12.2.7 SUSE-SU-2024:2203-1
SLES 15 SP6 kernel-docs 6.4.0-150600.23.7.4 SUSE-SU-2024:2203-1
SLES 15 SP6 kernel-source 6.4.0-150600.23.7.2 SUSE-SU-2024:2203-1
SLES 15 SP6 kernel-syms 6.4.0-150600.23.7.1 SUSE-SU-2024:2203-1
SLES 15 SP6 kernel-syms-azure 6.4.0-150600.8.5.1 SUSE-SU-2024:2135-1
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 SP3 kernel-64kb +6 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SLES 15 SP3 kernel-docs 5.3.18-150300.59.161.2 SUSE-SU-2024:1642-1
SLES 15 SP2 kernel-default-base 5.3.18-150200.24.191.1.150200.9.97.1 SUSE-SU-2024:1650-1
SLES 15 SP2 kernel-docs +5 5.3.18-150200.24.191.1 SUSE-SU-2024:1650-1
Show 15 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SLES for SAP 15 SP3 kernel-docs 5.3.18-150300.59.161.2 SUSE-SU-2024:1642-1
SLES for SAP 15 SP3 kernel-syms +4 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLES for SAP 15 SP2 kernel-default-base 5.3.18-150200.24.191.1.150200.9.97.1 SUSE-SU-2024:1650-1
SLES for SAP 15 SP2 kernel-docs +5 5.3.18-150200.24.191.1 SUSE-SU-2024:1650-1
SLE Micro 6.0 kernel-default-base 6.4.0-17.1.1.51 SUSE-SU-2025:20008-1
SLE Micro 6.0 kernel-rt +1 6.4.0-9.1 SUSE-SU-2025:20028-1
SLE Micro 6.0 kernel-source +2 6.4.0-18.1 SUSE-SU-2025:20008-1
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 5.2 kernel-default 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.169.1 SUSE-SU-2024:1645-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SLE Micro 5.1 kernel-rt +1 5.3.18-150300.169.1 SUSE-SU-2024:1645-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.7.3 SUSE-SU-2024:2203-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_1 1-150600.1.5.1 SUSE-SU-2024:2973-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_1 1-150600.13.3.7 SUSE-SU-2024:2203-1
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 SP3 kernel-default 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_44 1-150300.7.3.1 SUSE-SU-2024:1642-1
SLE Live Patching 15 SP2 kernel-default 5.3.18-150200.24.191.1 SUSE-SU-2024:1650-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_48 1-150200.5.3.1 SUSE-SU-2024:1650-1
SLE HPC 15 SP3 kernel-64kb +5 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SLE HPC 15 SP3 kernel-docs 5.3.18-150300.59.161.2 SUSE-SU-2024:1642-1
SLE HPC 15 SP2 kernel-default-base 5.3.18-150200.24.191.1.150200.9.97.1 SUSE-SU-2024:1650-1
SLE HPC 15 SP2 kernel-docs +5 5.3.18-150200.24.191.1 SUSE-SU-2024:1650-1
SUSE Real Time Module 15 SP6 kernel-rt +3 6.4.0-150600.10.5.1 SUSE-SU-2024:2973-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.79.1 SUSE-SU-2024:4315-1
SUSE Enterprise Storage 7.1 kernel-64kb +5 5.3.18-150300.59.161.1 SUSE-SU-2024:1642-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.161.1.150300.18.94.1 SUSE-SU-2024:1642-1
SUSE Enterprise Storage 7.1 kernel-docs 5.3.18-150300.59.161.2 SUSE-SU-2024:1642-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.6 dtb-aarch64 +2 6.4.0-150600.23.7.1 SUSE-SU-2024:2203-1
openSUSE Leap 15.6 kernel-64kb +5 6.4.0-150600.23.7.3 SUSE-SU-2024:2203-1
openSUSE Leap 15.6 kernel-azure +1 6.4.0-150600.8.5.4 SUSE-SU-2024:2135-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.7.3.150600.12.2.7 SUSE-SU-2024:2203-1
openSUSE Leap 15.6 kernel-docs 6.4.0-150600.23.7.4 SUSE-SU-2024:2203-1
openSUSE Leap 15.6 kernel-rt +3 6.4.0-150600.10.5.1 SUSE-SU-2024:2973-1
openSUSE Leap 15.6 kernel-source 6.4.0-150600.23.7.2 SUSE-SU-2024:2203-1
openSUSE Leap 15.6 kernel-syms-azure 6.4.0-150600.8.5.1 SUSE-SU-2024:2135-1
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-6.1.84-99.169 1.0-0.amzn2023 ALAS2023-2024-696
Amazon Linux 2023 perf +14 6.1.84-99.169.amzn2023 ALAS2023-2024-696

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 bpftool 7.4.0-503.11.1.el9_5 ELSA-2024-9315
Oracle Linux 9 rv +28 5.14.0-503.11.1.el9_5 ELSA-2024-9315
Oracle Linux 8 perf +19 4.18.0-553.8.1.el8_10 ELSA-2024-4211

Advisories 40

References