NULL pointer dereference in Linux kernel - CVE-2023-53817

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Main Vulnerability Database Vulnerabilities #VU119727

NULL pointer dereference in Linux kernel - CVE-2023-53817

Published: December 10, 2025 / Updated: December 12, 2025


Vulnerability identifier: #VU119727
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-2023-53817
CWE-ID: CWE-476
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 NULL pointer dereference within the mpi_cmp_ui() function in lib/mpi/mpi-cmp.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Live Patching
Basesystem Module
Development Tools Module
Legacy Module
Public Cloud Module
SUSE Real Time Module
openSUSE Leap
openEuler
kernel-livepatch-6_4_0-150600_23_92-default-debuginfo
kernel-livepatch-SLE15-SP6_Update_21-debugsource
kernel-livepatch-6_4_0-150600_23_92-default
kernel-livepatch-6_4_0-150700_7_34-rt-debuginfo
kernel-livepatch-6_4_0-150700_7_34-rt
kernel-livepatch-SLE15-SP7-RT_Update_10-debugsource
kernel-livepatch-6_4_0-150700_53_34-default-debuginfo
kernel-livepatch-6_4_0-150700_53_34-default
kernel-livepatch-SLE15-SP7_Update_10-debugsource
bpftool
python3-perf-debuginfo
python3-perf
python2-perf-debuginfo
perf-debuginfo
kernel
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-source
python2-perf
kernel-tools-debuginfo
kernel-tools
perf
kernel-tools-devel
ocfs2-kmp-default
kernel-64kb-optional
dtb-apm
reiserfs-kmp-64kb-debuginfo
dtb-amlogic
dtb-cavium
dtb-mediatek
reiserfs-kmp-64kb
kselftests-kmp-64kb
dtb-apple
dlm-kmp-64kb-debuginfo
dtb-socionext
dtb-rockchip
dtb-sprd
dtb-amd
dtb-amazon
dtb-aarch64
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-zfcpdump
kernel-kvmsmall
kernel-default
kselftests-kmp-default
gfs2-kmp-default
kernel-default-optional-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-extra-debuginfo
gfs2-kmp-64kb
cluster-md-kmp-64kb-debuginfo
kernel-64kb
dtb-xilinx
dtb-allwinner
dtb-lg
ocfs2-kmp-64kb-debuginfo
dlm-kmp-64kb
dtb-nvidia
ocfs2-kmp-64kb
kernel-64kb-optional-debuginfo
dtb-marvell
dtb-altera
dtb-broadcom
dtb-exynos
dtb-arm
gfs2-kmp-64kb-debuginfo
dtb-qcom
dtb-freescale
kselftests-kmp-64kb-debuginfo
kernel-64kb-extra-debuginfo
kernel-64kb-devel-debuginfo
kernel-64kb-extra
cluster-md-kmp-64kb
kernel-64kb-debugsource
dtb-hisilicon
kernel-64kb-devel
dtb-renesas
kernel-64kb-debuginfo
kernel-debug-debugsource
kernel-kvmsmall-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel-debuginfo
kernel-debug-vdso
kernel-kvmsmall-vdso
kernel-debug-vdso-debuginfo
kernel-default-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso-debuginfo
kernel-debug-devel
kernel-obs-qa
kernel-debug-devel-debuginfo
kernel-debug-debuginfo
kernel-debug
kernel-macros
kernel-source-vanilla
kernel-docs-html
kernel-docs
kernel-default-livepatch-devel
kernel-kvmsmall-devel
kselftests-kmp-default-debuginfo
kernel-default-optional
dlm-kmp-default
kernel-syms
kernel-default-debugsource
kernel-default-devel-debuginfo
reiserfs-kmp-default-debuginfo
kernel-default-devel
dlm-kmp-default-debuginfo
cluster-md-kmp-default
cluster-md-kmp-default-debuginfo
kernel-default-debuginfo
kernel-obs-build
kernel-default-livepatch
kernel-default-extra
gfs2-kmp-default-debuginfo
reiserfs-kmp-default
kernel-obs-build-debugsource
kernel-default-base-rebuild
kernel-default-base
kernel-syms-rt
ocfs2-kmp-rt-debuginfo
kernel-rt-devel-debuginfo
kernel-rt-devel
ocfs2-kmp-rt
gfs2-kmp-rt-debuginfo
cluster-md-kmp-rt
kernel-rt-debugsource
dlm-kmp-rt
gfs2-kmp-rt
kernel-rt-debuginfo
kernel-rt
dlm-kmp-rt-debuginfo
kernel-source-rt
kernel-devel-rt
cluster-md-kmp-rt-debuginfo
kernel-azure
kernel-azure-debugsource
kernel-azure-debuginfo
kernel-azure-devel
kernel-azure-devel-debuginfo

How to mitigate CVE-2023-53817

Install update from vendor's repository.

Linux kernel - update to 4.14.326
kernel-livepatch-6_4_0-150600_23_92-default-debuginfo - update to 1-150600.13.5.1
kernel-livepatch-SLE15-SP6_Update_21-debugsource - update to 1-150600.13.5.1
kernel-livepatch-6_4_0-150600_23_92-default - update to 1-150600.13.5.1
kernel-livepatch-6_4_0-150700_7_34-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_34-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_10-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_53_34-default-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_34-default - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_10-debugsource - update to 1-150700.15.3.1
bpftool - update to 4.19.90-2601.4.0.0359
python3-perf-debuginfo - update to 4.19.90-2601.4.0.0359
python3-perf - update to 4.19.90-2601.4.0.0359
python2-perf-debuginfo - update to 4.19.90-2601.4.0.0359
perf-debuginfo - update to 4.19.90-2601.4.0.0359
kernel - update to 4.19.90-2601.4.0.0359
bpftool-debuginfo - update to 4.19.90-2601.4.0.0359
kernel-debuginfo - update to 4.19.90-2601.4.0.0359
kernel-debugsource - update to 4.19.90-2601.4.0.0359
kernel-devel - update to 4.19.90-2601.4.0.0359
kernel-source - update to 4.19.90-2601.4.0.0359
python2-perf - update to 4.19.90-2601.4.0.0359
kernel-tools-debuginfo - update to 4.19.90-2601.4.0.0359
kernel-tools - update to 4.19.90-2601.4.0.0359
perf - update to 4.19.90-2601.4.0.0359
kernel-tools-devel - update to 4.19.90-2601.4.0.0359
ocfs2-kmp-default - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-64kb-optional - update to 6.4.0-150600.23.92.1
dtb-apm - update to 6.4.0-150600.23.92.1
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.92.1
dtb-amlogic - update to 6.4.0-150600.23.92.1
dtb-cavium - update to 6.4.0-150600.23.92.1
dtb-mediatek - update to 6.4.0-150600.23.92.1
reiserfs-kmp-64kb - update to 6.4.0-150600.23.92.1
kselftests-kmp-64kb - update to 6.4.0-150600.23.92.1
dtb-apple - update to 6.4.0-150600.23.92.1
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.92.1
dtb-socionext - update to 6.4.0-150600.23.92.1
dtb-rockchip - update to 6.4.0-150600.23.92.1
dtb-sprd - update to 6.4.0-150600.23.92.1
dtb-amd - update to 6.4.0-150600.23.92.1
dtb-amazon - update to 6.4.0-150600.23.92.1
dtb-aarch64 - update to 6.4.0-150600.23.92.1
kernel-zfcpdump-debugsource - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-zfcpdump-debuginfo - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-zfcpdump - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-kvmsmall - update to 6.4.0-150600.23.92.1
kernel-default - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kselftests-kmp-default - update to 6.4.0-150600.23.92.1
gfs2-kmp-default - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.92.1
ocfs2-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-default-extra-debuginfo - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
gfs2-kmp-64kb - update to 6.4.0-150600.23.92.1
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.92.1
kernel-64kb - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
dtb-xilinx - update to 6.4.0-150600.23.92.1
dtb-allwinner - update to 6.4.0-150600.23.92.1
dtb-lg - update to 6.4.0-150600.23.92.1
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.92.1
dlm-kmp-64kb - update to 6.4.0-150600.23.92.1
dtb-nvidia - update to 6.4.0-150600.23.92.1
ocfs2-kmp-64kb - update to 6.4.0-150600.23.92.1
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.92.1
dtb-marvell - update to 6.4.0-150600.23.92.1
dtb-altera - update to 6.4.0-150600.23.92.1
dtb-broadcom - update to 6.4.0-150600.23.92.1
dtb-exynos - update to 6.4.0-150600.23.92.1
dtb-arm - update to 6.4.0-150600.23.92.1
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.92.1
dtb-qcom - update to 6.4.0-150600.23.92.1
dtb-freescale - update to 6.4.0-150600.23.92.1
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.92.1
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.92.1
kernel-64kb-devel-debuginfo - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-64kb-extra - update to 6.4.0-150600.23.92.1
cluster-md-kmp-64kb - update to 6.4.0-150600.23.92.1
kernel-64kb-debugsource - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
dtb-hisilicon - update to 6.4.0-150600.23.92.1
kernel-64kb-devel - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
dtb-renesas - update to 6.4.0-150600.23.92.1
kernel-64kb-debuginfo - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-debug-debugsource - update to 6.4.0-150600.23.92.1
kernel-kvmsmall-debuginfo - update to 6.4.0-150600.23.92.1
kernel-kvmsmall-debugsource - update to 6.4.0-150600.23.92.1
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.92.1
kernel-debug-vdso - update to 6.4.0-150600.23.92.1
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.92.1
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.92.1
kernel-default-vdso - update to 6.4.0-150600.23.92.1
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.92.1
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.92.1
kernel-debug-devel - update to 6.4.0-150600.23.92.1
kernel-obs-qa - update to 6.4.0-150600.23.92.1
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.92.1
kernel-debug-debuginfo - update to 6.4.0-150600.23.92.1
kernel-debug - update to 6.4.0-150600.23.92.1
kernel-devel - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-macros - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-source - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-source-vanilla - update to 6.4.0-150600.23.92.1
kernel-docs-html - update to 6.4.0-150600.23.92.1
kernel-docs - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-default-livepatch-devel - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-kvmsmall-devel - update to 6.4.0-150600.23.92.1
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.92.1
kernel-default-optional - update to 6.4.0-150600.23.92.1
dlm-kmp-default - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-syms - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-default-debugsource - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-default-devel-debuginfo - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
reiserfs-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-default-devel - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
dlm-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
cluster-md-kmp-default - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
cluster-md-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-default-debuginfo - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-obs-build - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-default-livepatch - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-default-extra - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
gfs2-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
reiserfs-kmp-default - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-obs-build-debugsource - addressed in versions 6.4.0-150600.23.92.1, 6.4.0-150700.53.34.1
kernel-default-base-rebuild - update to 6.4.0-150600.23.92.1.150600.12.42.2
kernel-default-base - addressed in versions 6.4.0-150600.23.92.1.150600.12.42.2, 6.4.0-150700.53.34.1.150700.17.23.1
kernel-syms-rt - update to 6.4.0-150700.7.34.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.34.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.34.1
kernel-rt-devel - update to 6.4.0-150700.7.34.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.34.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.34.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.34.1
kernel-rt-debugsource - update to 6.4.0-150700.7.34.1
dlm-kmp-rt - update to 6.4.0-150700.7.34.1
gfs2-kmp-rt - update to 6.4.0-150700.7.34.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.34.1
kernel-rt - update to 6.4.0-150700.7.34.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.34.1
kernel-source-rt - update to 6.4.0-150700.7.34.1
kernel-devel-rt - update to 6.4.0-150700.7.34.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.34.1
kernel-azure - update to 6.4.0-150700.53.34.1
kernel-azure-debugsource - update to 6.4.0-150700.53.34.1
kernel-azure-debuginfo - update to 6.4.0-150700.53.34.1
kernel-azure-devel - update to 6.4.0-150700.53.34.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.53.34.1

External References

Related Security Bulletins