Resource management error in Linux kernel - CVE-2021-47623

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Main Vulnerability Database Vulnerabilities #VU94487

Resource management error in Linux kernel - CVE-2021-47623

Published: July 17, 2024 / Updated: May 13, 2025


Vulnerability identifier: #VU94487
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-47623
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to resource management error within the set_pte_at() function in arch/powerpc/mm/pgtable.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
openSUSE Leap Micro
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Live Patching
Legacy Module
Development Tools Module
Basesystem Module
SUSE Real Time Module
Public Cloud Module
openSUSE Leap
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel-livepatch-5_14_21-150500_13_64-rt
kernel-livepatch-SLE15-SP5_Update_17-debugsource
kernel-livepatch-5_14_21-150500_55_73-default
kernel-livepatch-5_14_21-150500_55_73-default-debuginfo
kernel-livepatch-5_14_21-150500_13_64-rt-debuginfo
kernel-livepatch-SLE15-SP5-RT_Update_18-debugsource
kernel (Red Hat package)
kernel-rt_debug
kernel-rt-vdso
kernel-rt-extra-debuginfo
kselftests-kmp-rt
kernel-rt
kernel-devel-rt
kernel-rt-extra
kernel-syms-rt
kernel-rt-vdso-debuginfo
kernel-rt-livepatch-devel
dlm-kmp-rt-debuginfo
kernel-rt-debugsource
kernel-rt-optional
dlm-kmp-rt
gfs2-kmp-rt-debuginfo
kernel-rt_debug-vdso-debuginfo
kernel-rt_debug-vdso
kernel-source-rt
kernel-rt-livepatch
ocfs2-kmp-rt-debuginfo
cluster-md-kmp-rt-debuginfo
kernel-rt_debug-devel
ocfs2-kmp-rt
gfs2-kmp-rt
kernel-rt_debug-debuginfo
kernel-rt-optional-debuginfo
kernel-rt-devel-debuginfo
reiserfs-kmp-rt-debuginfo
kernel-rt_debug-livepatch-devel
cluster-md-kmp-rt
kernel-rt_debug-debugsource
reiserfs-kmp-rt
kselftests-kmp-rt-debuginfo
kernel-rt-debuginfo
kernel-rt-devel
kernel-rt_debug-devel-debuginfo
kselftests-kmp-azure-debuginfo
ocfs2-kmp-azure
cluster-md-kmp-azure-debuginfo
kernel-azure-extra-debuginfo
dlm-kmp-azure
reiserfs-kmp-azure
reiserfs-kmp-azure-debuginfo
kernel-azure-devel
kernel-azure-optional-debuginfo
gfs2-kmp-azure
ocfs2-kmp-azure-debuginfo
cluster-md-kmp-azure
kernel-azure-devel-debuginfo
kernel-azure-vdso
kernel-source-azure
kernel-devel-azure
kernel-azure-vdso-debuginfo
kernel-azure
kernel-azure-livepatch-devel
gfs2-kmp-azure-debuginfo
kernel-syms-azure
dlm-kmp-azure-debuginfo
kernel-azure-debugsource
kernel-azure-debuginfo
kernel-azure-extra
kernel-azure-optional
kselftests-kmp-azure
dtb-apple
dtb-cavium
dtb-socionext
dtb-nvidia
dtb-amd
cluster-md-kmp-64kb-debuginfo
reiserfs-kmp-64kb
ocfs2-kmp-64kb
dtb-rockchip
dtb-renesas
dlm-kmp-64kb
reiserfs-kmp-64kb-debuginfo
kernel-64kb-debuginfo
kselftests-kmp-64kb
kernel-64kb-devel
kernel-64kb-extra
kernel-64kb-livepatch-devel
dtb-sprd
kernel-64kb
ocfs2-kmp-64kb-debuginfo
dtb-freescale
dtb-exynos
dlm-kmp-64kb-debuginfo
kernel-64kb-devel-debuginfo
gfs2-kmp-64kb-debuginfo
dtb-marvell
dtb-hisilicon
dtb-apm
dtb-amazon
kselftests-kmp-64kb-debuginfo
kernel-64kb-optional
dtb-qcom
dtb-broadcom
dtb-altera
dtb-mediatek
dtb-arm
dtb-amlogic
kernel-debug-vdso
gfs2-kmp-default-debuginfo
kernel-default-optional
kernel-default-devel-debuginfo
kselftests-kmp-default-debuginfo
kernel-syms
kernel-default-livepatch-devel
gfs2-kmp-default
ocfs2-kmp-default
kselftests-kmp-default
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debuginfo
kernel-kvmsmall-livepatch-devel
kernel-kvmsmall-devel
kernel-kvmsmall-debugsource
kernel-debug-vdso-debuginfo
kernel-64kb-extra-debuginfo
kernel-default-vdso-debuginfo
kernel-default-vdso
kernel-kvmsmall-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-debug-devel-debuginfo
kernel-debug-devel
kernel-debug-debugsource
kernel-debug-debuginfo
kernel-debug-livepatch-devel
kernel-debug
kernel-source-vanilla
kernel-devel
kernel-macros
kernel-source
kernel-obs-qa
kernel-64kb-debugsource
dtb-allwinner
kernel-64kb-optional-debuginfo
gfs2-kmp-64kb
cluster-md-kmp-64kb
dtb-lg
dtb-xilinx
dtb-aarch64
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-zfcpdump
kernel-kvmsmall
kernel-default
kernel-default-debuginfo
kernel-obs-build-debugsource
kernel-default-livepatch
kernel-obs-build
reiserfs-kmp-default
kernel-default-extra-debuginfo
reiserfs-kmp-default-debuginfo
kernel-default-extra
dlm-kmp-default
cluster-md-kmp-default
kernel-default-devel
ocfs2-kmp-default-debuginfo
kernel-default-debugsource
dlm-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kernel-default-optional-debuginfo
kernel-default-base
kernel-default-base-rebuild
kernel-docs-html
kernel-docs

How to mitigate CVE-2021-47623

Install update from vendor's website.

Linux kernel - addressed in versions 5.10.101, 5.15.24, 5.16.10, 5.17
kernel-livepatch-5_14_21-150500_13_64-rt - update to 1-150500.11.3.1
kernel-livepatch-SLE15-SP5_Update_17-debugsource - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_73-default - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_73-default-debuginfo - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_13_64-rt-debuginfo - update to 1-150500.11.3.1
kernel-livepatch-SLE15-SP5-RT_Update_18-debugsource - update to 1-150500.11.3.1
kernel (Red Hat package) - update to 5.14.0-70.117.1.el9_0
kernel-rt_debug - update to 5.14.21-150500.13.64.1
kernel-rt-vdso - update to 5.14.21-150500.13.64.1
kernel-rt-extra-debuginfo - update to 5.14.21-150500.13.64.1
kselftests-kmp-rt - update to 5.14.21-150500.13.64.1
kernel-rt - update to 5.14.21-150500.13.64.1
kernel-devel-rt - update to 5.14.21-150500.13.64.1
kernel-rt-extra - update to 5.14.21-150500.13.64.1
kernel-syms-rt - update to 5.14.21-150500.13.64.1
kernel-rt-vdso-debuginfo - update to 5.14.21-150500.13.64.1
kernel-rt-livepatch-devel - update to 5.14.21-150500.13.64.1
dlm-kmp-rt-debuginfo - update to 5.14.21-150500.13.64.1
kernel-rt-debugsource - update to 5.14.21-150500.13.64.1
kernel-rt-optional - update to 5.14.21-150500.13.64.1
dlm-kmp-rt - update to 5.14.21-150500.13.64.1
gfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.64.1
kernel-rt_debug-vdso-debuginfo - update to 5.14.21-150500.13.64.1
kernel-rt_debug-vdso - update to 5.14.21-150500.13.64.1
kernel-source-rt - update to 5.14.21-150500.13.64.1
kernel-rt-livepatch - update to 5.14.21-150500.13.64.1
ocfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.64.1
cluster-md-kmp-rt-debuginfo - update to 5.14.21-150500.13.64.1
kernel-rt_debug-devel - update to 5.14.21-150500.13.64.1
ocfs2-kmp-rt - update to 5.14.21-150500.13.64.1
gfs2-kmp-rt - update to 5.14.21-150500.13.64.1
kernel-rt_debug-debuginfo - update to 5.14.21-150500.13.64.1
kernel-rt-optional-debuginfo - update to 5.14.21-150500.13.64.1
kernel-rt-devel-debuginfo - update to 5.14.21-150500.13.64.1
reiserfs-kmp-rt-debuginfo - update to 5.14.21-150500.13.64.1
kernel-rt_debug-livepatch-devel - update to 5.14.21-150500.13.64.1
cluster-md-kmp-rt - update to 5.14.21-150500.13.64.1
kernel-rt_debug-debugsource - update to 5.14.21-150500.13.64.1
reiserfs-kmp-rt - update to 5.14.21-150500.13.64.1
kselftests-kmp-rt-debuginfo - update to 5.14.21-150500.13.64.1
kernel-rt-debuginfo - update to 5.14.21-150500.13.64.1
kernel-rt-devel - update to 5.14.21-150500.13.64.1
kernel-rt_debug-devel-debuginfo - update to 5.14.21-150500.13.64.1
kselftests-kmp-azure-debuginfo - update to 5.14.21-150500.33.63.1
ocfs2-kmp-azure - update to 5.14.21-150500.33.63.1
cluster-md-kmp-azure-debuginfo - update to 5.14.21-150500.33.63.1
kernel-azure-extra-debuginfo - update to 5.14.21-150500.33.63.1
dlm-kmp-azure - update to 5.14.21-150500.33.63.1
reiserfs-kmp-azure - update to 5.14.21-150500.33.63.1
reiserfs-kmp-azure-debuginfo - update to 5.14.21-150500.33.63.1
kernel-azure-devel - update to 5.14.21-150500.33.63.1
kernel-azure-optional-debuginfo - update to 5.14.21-150500.33.63.1
gfs2-kmp-azure - update to 5.14.21-150500.33.63.1
ocfs2-kmp-azure-debuginfo - update to 5.14.21-150500.33.63.1
cluster-md-kmp-azure - update to 5.14.21-150500.33.63.1
kernel-azure-devel-debuginfo - update to 5.14.21-150500.33.63.1
kernel-azure-vdso - update to 5.14.21-150500.33.63.1
kernel-source-azure - update to 5.14.21-150500.33.63.1
kernel-devel-azure - update to 5.14.21-150500.33.63.1
kernel-azure-vdso-debuginfo - update to 5.14.21-150500.33.63.1
kernel-azure - update to 5.14.21-150500.33.63.1
kernel-azure-livepatch-devel - update to 5.14.21-150500.33.63.1
gfs2-kmp-azure-debuginfo - update to 5.14.21-150500.33.63.1
kernel-syms-azure - update to 5.14.21-150500.33.63.1
dlm-kmp-azure-debuginfo - update to 5.14.21-150500.33.63.1
kernel-azure-debugsource - update to 5.14.21-150500.33.63.1
kernel-azure-debuginfo - update to 5.14.21-150500.33.63.1
kernel-azure-extra - update to 5.14.21-150500.33.63.1
kernel-azure-optional - update to 5.14.21-150500.33.63.1
kselftests-kmp-azure - update to 5.14.21-150500.33.63.1
dtb-apple - update to 5.14.21-150500.55.73.1
dtb-cavium - update to 5.14.21-150500.55.73.1
dtb-socionext - update to 5.14.21-150500.55.73.1
dtb-nvidia - update to 5.14.21-150500.55.73.1
dtb-amd - update to 5.14.21-150500.55.73.1
cluster-md-kmp-64kb-debuginfo - update to 5.14.21-150500.55.73.1
reiserfs-kmp-64kb - update to 5.14.21-150500.55.73.1
ocfs2-kmp-64kb - update to 5.14.21-150500.55.73.1
dtb-rockchip - update to 5.14.21-150500.55.73.1
dtb-renesas - update to 5.14.21-150500.55.73.1
dlm-kmp-64kb - update to 5.14.21-150500.55.73.1
reiserfs-kmp-64kb-debuginfo - update to 5.14.21-150500.55.73.1
kernel-64kb-debuginfo - update to 5.14.21-150500.55.73.1
kselftests-kmp-64kb - update to 5.14.21-150500.55.73.1
kernel-64kb-devel - update to 5.14.21-150500.55.73.1
kernel-64kb-extra - update to 5.14.21-150500.55.73.1
kernel-64kb-livepatch-devel - update to 5.14.21-150500.55.73.1
dtb-sprd - update to 5.14.21-150500.55.73.1
kernel-64kb - update to 5.14.21-150500.55.73.1
ocfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.73.1
dtb-freescale - update to 5.14.21-150500.55.73.1
dtb-exynos - update to 5.14.21-150500.55.73.1
dlm-kmp-64kb-debuginfo - update to 5.14.21-150500.55.73.1
kernel-64kb-devel-debuginfo - update to 5.14.21-150500.55.73.1
gfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.73.1
dtb-marvell - update to 5.14.21-150500.55.73.1
dtb-hisilicon - update to 5.14.21-150500.55.73.1
dtb-apm - update to 5.14.21-150500.55.73.1
dtb-amazon - update to 5.14.21-150500.55.73.1
kselftests-kmp-64kb-debuginfo - update to 5.14.21-150500.55.73.1
kernel-64kb-optional - update to 5.14.21-150500.55.73.1
dtb-qcom - update to 5.14.21-150500.55.73.1
dtb-broadcom - update to 5.14.21-150500.55.73.1
dtb-altera - update to 5.14.21-150500.55.73.1
dtb-mediatek - update to 5.14.21-150500.55.73.1
dtb-arm - update to 5.14.21-150500.55.73.1
dtb-amlogic - update to 5.14.21-150500.55.73.1
kernel-debug-vdso - update to 5.14.21-150500.55.73.1
gfs2-kmp-default-debuginfo - update to 5.14.21-150500.55.73.1
kernel-default-optional - update to 5.14.21-150500.55.73.1
kernel-default-devel-debuginfo - update to 5.14.21-150500.55.73.1
kselftests-kmp-default-debuginfo - update to 5.14.21-150500.55.73.1
kernel-syms - update to 5.14.21-150500.55.73.1
kernel-default-livepatch-devel - update to 5.14.21-150500.55.73.1
gfs2-kmp-default - update to 5.14.21-150500.55.73.1
ocfs2-kmp-default - update to 5.14.21-150500.55.73.1
kselftests-kmp-default - update to 5.14.21-150500.55.73.1
kernel-kvmsmall-devel-debuginfo - update to 5.14.21-150500.55.73.1
kernel-kvmsmall-debuginfo - update to 5.14.21-150500.55.73.1
kernel-kvmsmall-livepatch-devel - update to 5.14.21-150500.55.73.1
kernel-kvmsmall-devel - update to 5.14.21-150500.55.73.1
kernel-kvmsmall-debugsource - update to 5.14.21-150500.55.73.1
kernel-debug-vdso-debuginfo - update to 5.14.21-150500.55.73.1
kernel-64kb-extra-debuginfo - update to 5.14.21-150500.55.73.1
kernel-default-vdso-debuginfo - update to 5.14.21-150500.55.73.1
kernel-default-vdso - update to 5.14.21-150500.55.73.1
kernel-kvmsmall-vdso - update to 5.14.21-150500.55.73.1
kernel-kvmsmall-vdso-debuginfo - update to 5.14.21-150500.55.73.1
kernel-debug-devel-debuginfo - update to 5.14.21-150500.55.73.1
kernel-debug-devel - update to 5.14.21-150500.55.73.1
kernel-debug-debugsource - update to 5.14.21-150500.55.73.1
kernel-debug-debuginfo - update to 5.14.21-150500.55.73.1
kernel-debug-livepatch-devel - update to 5.14.21-150500.55.73.1
kernel-debug - update to 5.14.21-150500.55.73.1
kernel-source-vanilla - update to 5.14.21-150500.55.73.1
kernel-devel - update to 5.14.21-150500.55.73.1
kernel-macros - update to 5.14.21-150500.55.73.1
kernel-source - update to 5.14.21-150500.55.73.1
kernel-obs-qa - update to 5.14.21-150500.55.73.1
kernel-64kb-debugsource - update to 5.14.21-150500.55.73.1
dtb-allwinner - update to 5.14.21-150500.55.73.1
kernel-64kb-optional-debuginfo - update to 5.14.21-150500.55.73.1
gfs2-kmp-64kb - update to 5.14.21-150500.55.73.1
cluster-md-kmp-64kb - update to 5.14.21-150500.55.73.1
dtb-lg - update to 5.14.21-150500.55.73.1
dtb-xilinx - update to 5.14.21-150500.55.73.1
dtb-aarch64 - update to 5.14.21-150500.55.73.1
kernel-zfcpdump-debuginfo - update to 5.14.21-150500.55.73.1
kernel-zfcpdump-debugsource - update to 5.14.21-150500.55.73.1
kernel-zfcpdump - update to 5.14.21-150500.55.73.1
kernel-kvmsmall - update to 5.14.21-150500.55.73.1
kernel-default - update to 5.14.21-150500.55.73.1
kernel-default-debuginfo - update to 5.14.21-150500.55.73.1
kernel-obs-build-debugsource - update to 5.14.21-150500.55.73.1
kernel-default-livepatch - update to 5.14.21-150500.55.73.1
kernel-obs-build - update to 5.14.21-150500.55.73.1
reiserfs-kmp-default - update to 5.14.21-150500.55.73.1
kernel-default-extra-debuginfo - update to 5.14.21-150500.55.73.1
reiserfs-kmp-default-debuginfo - update to 5.14.21-150500.55.73.1
kernel-default-extra - update to 5.14.21-150500.55.73.1
dlm-kmp-default - update to 5.14.21-150500.55.73.1
cluster-md-kmp-default - update to 5.14.21-150500.55.73.1
kernel-default-devel - update to 5.14.21-150500.55.73.1
ocfs2-kmp-default-debuginfo - update to 5.14.21-150500.55.73.1
kernel-default-debugsource - update to 5.14.21-150500.55.73.1
dlm-kmp-default-debuginfo - update to 5.14.21-150500.55.73.1
cluster-md-kmp-default-debuginfo - update to 5.14.21-150500.55.73.1
kernel-default-optional-debuginfo - update to 5.14.21-150500.55.73.1
kernel-default-base - update to 5.14.21-150500.55.73.1.150500.6.33.8
kernel-default-base-rebuild - update to 5.14.21-150500.55.73.1.150500.6.33.8
kernel-docs-html - update to 5.14.21-150500.55.73.2
kernel-docs - update to 5.14.21-150500.55.73.2

External References

Related Security Bulletins