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CVE-2020-29368

Description

An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.

Risk Information

Base Score
7.0
MODERATE
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
0.034

Associated Vulnerability

VulnerabilityOS Platform
Kernel-uek update (ELSA-2021-9005) kernel-uek-4.14.35-2025.404.1.1.el7uek.x86_64.rpmLinux
Kernel-uek-debug update (ELSA-2021-9005) kernel-uek-debug-4.14.35-2025.404.1.1.el7uek.x86_64.rpmLinux
Kernel-uek-debug-devel update (ELSA-2021-9005) kernel-uek-debug-devel-4.14.35-2025.404.1.1.el7uek.x86_64.rpmLinux
Kernel-uek-devel update (ELSA-2021-9005) kernel-uek-devel-4.14.35-2025.404.1.1.el7uek.x86_64.rpmLinux
Kernel-uek-doc update (ELSA-2021-9005) kernel-uek-doc-4.14.35-2025.404.1.1.el7uek.noarch.rpmLinux
Kernel-uek-tools update (ELSA-2021-9005) kernel-uek-tools-4.14.35-2025.404.1.1.el7uek.x86_64.rpmLinux
SUSE-SU-2021:1175-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-4.12.14-16.50.1.x86_64.rpmLinux
SUSE-SU-2021:1175-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-base-4.12.14-16.50.1.x86_64.rpmLinux
SUSE-SU-2021:1175-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-base-debuginfo-4.12.14-16.50.1.x86_64.rpmLinux
SUSE-SU-2021:1175-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-debuginfo-4.12.14-16.50.1.x86_64.rpmLinux
SUSE-SU-2021:1175-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-debugsource-4.12.14-16.50.1.x86_64.rpmLinux
SUSE-SU-2021:1175-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-azure-devel-4.12.14-16.50.1.x86_64.rpmLinux
SUSE-SU-2021:1175-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-devel-azure-4.12.14-16.50.1.noarch.rpmLinux
SUSE-SU-2021:1175-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-source-azure-4.12.14-16.50.1.noarch.rpmLinux
SUSE-SU-2021:1175-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-syms-azure-4.12.14-16.50.1.x86_64.rpmLinux
SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-4.12.14-122.66.2.x86_64.rpmLinux
SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-base-4.12.14-122.66.2.x86_64.rpmLinux
SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-base-debuginfo-4.12.14-122.66.2.x86_64.rpmLinux
SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-debuginfo-4.12.14-122.66.2.x86_64.rpmLinux
SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-debugsource-4.12.14-122.66.2.x86_64.rpmLinux
SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-devel-4.12.14-122.66.2.x86_64.rpmLinux
SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-default-devel-debuginfo-4.12.14-122.66.2.x86_64.rpmLinux
SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-devel-4.12.14-122.66.2.noarch.rpmLinux
SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-macros-4.12.14-122.66.2.noarch.rpmLinux
SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-source-4.12.14-122.66.2.noarch.rpmLinux
SUSE-SU-2021:1210-1(SUSE Linux Enterprise Server 12-SP5 ) kernel-syms-4.12.14-122.66.2.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update bpftool-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-abi-stablelists-4.18.0-348.el8.noarch.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-core-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-cross-headers-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-debug-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-debug-core-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-debug-devel-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-debug-modules-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-debug-modules-extra-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-devel-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-doc-4.18.0-348.el8.noarch.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-headers-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-modules-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-modules-extra-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-tools-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update kernel-tools-libs-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update perf-4.18.0-348.el8.x86_64.rpmLinux
(RHSA-2021:4356) kernel security, bug fix, and enhancement update python3-perf-4.18.0-348.el8.x86_64.rpmLinux
Linux kernel for OEM systems (USN-4752-1) linux-image-5.6.0-1048-oem_5.6.0-1048.52_amd64.debLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234