NULL pointer dereference in Linux kernel - CVE-2023-52893

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Main Vulnerability Database Vulnerabilities #VU96349

NULL pointer dereference in Linux kernel - CVE-2023-52893

Published: August 21, 2024 / Updated: May 12, 2025


Vulnerability identifier: #VU96349
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2023-52893
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available
Affected software:
Linux kernel
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Availability Extension 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 12
SUSE Linux Enterprise Workstation Extension 15
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Manager Server
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
openSUSE Leap Micro
SUSE Linux Enterprise Workstation Extension 12
SUSE Linux Enterprise Live Patching
SUSE Linux Enterprise Desktop 15 SP4 LTSS
SUSE Linux Enterprise Server 15 SP4 LTSS
Legacy Module
Development Tools Module
Basesystem Module
SUSE Real Time Module
Public Cloud Module
openSUSE Leap
openEuler
RecoverPoint for Virtual Machines
kgraft-patch-4_12_14-122_228-default
kernel-livepatch-SLE15-SP4_Update_31-debugsource
kernel-livepatch-5_14_21-150400_24_133-default
kernel-livepatch-5_14_21-150400_24_133-default-debuginfo
kernel-livepatch-5_14_21-150500_13_67-rt-debuginfo
kernel-livepatch-5_14_21-150500_13_67-rt
kernel-livepatch-SLE15-SP5-RT_Update_19-debugsource
kernel-livepatch-5_14_21-150500_55_80-default-debuginfo
kernel-livepatch-SLE15-SP5_Update_19-debugsource
kernel-livepatch-5_14_21-150500_55_80-default
kernel-rt-devel
gfs2-kmp-rt
dlm-kmp-rt
cluster-md-kmp-rt
kernel-rt_debug-debuginfo
kernel-rt-debuginfo
kernel-rt-base
kernel-syms-rt
kernel-rt_debug-devel-debuginfo
gfs2-kmp-rt-debuginfo
kernel-rt-base-debuginfo
kernel-rt_debug-debugsource
ocfs2-kmp-rt
ocfs2-kmp-rt-debuginfo
kernel-rt_debug-devel
kernel-rt-devel-debuginfo
dlm-kmp-rt-debuginfo
kernel-devel-rt
kernel-source-rt
kernel-rt
kernel-rt_debug
cluster-md-kmp-rt-debuginfo
kernel-rt-debugsource
kernel-azure-base-debuginfo
kernel-azure
kernel-azure-base
kernel-azure-devel
kernel-azure-debuginfo
kernel-azure-debugsource
kernel-syms-azure
kernel-devel-azure
kernel-source-azure
kernel-default-debugsource
gfs2-kmp-default-debuginfo
ocfs2-kmp-default
kernel-default-debuginfo
kernel-default-base
kernel-syms
cluster-md-kmp-default-debuginfo
kernel-default-devel
dlm-kmp-default
kernel-default-kgraft-devel
kernel-default-extra-debuginfo
kernel-default-extra
kernel-default-man
kernel-default-kgraft
cluster-md-kmp-default
kernel-default-devel-debuginfo
kernel-source
kernel-macros
kernel-devel
kernel-default
gfs2-kmp-default
dlm-kmp-default-debuginfo
kernel-default-base-debuginfo
ocfs2-kmp-default-debuginfo
kernel-docs
kernel-obs-build-debugsource
kernel-obs-build
kernel
bpftool
python2-perf-debuginfo
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-tools
kernel-tools-debuginfo
python2-perf
perf-debuginfo
python3-perf-debuginfo
python3-perf
kernel-tools-devel
perf
kernel-headers
dtb-altera
kernel-obs-qa
dtb-sprd
dtb-allwinner
dtb-xilinx
dtb-nvidia
dtb-renesas
dtb-freescale
dtb-amd
dtb-aarch64
dtb-lg
dtb-exynos
dtb-marvell
dtb-socionext
dtb-cavium
dtb-arm
dtb-amlogic
kernel-docs-html
dtb-mediatek
dtb-hisilicon
dtb-qcom
dtb-apple
dtb-apm
dtb-amazon
dtb-broadcom
dtb-rockchip
kernel-kvmsmall-debuginfo
reiserfs-kmp-default
kselftests-kmp-default-debuginfo
reiserfs-kmp-default-debuginfo
kselftests-kmp-default
kernel-default-optional
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel
kernel-kvmsmall-livepatch-devel
kernel-debug-livepatch-devel
kernel-debug-debuginfo
kernel-debug-debugsource
kernel-debug-devel-debuginfo
kernel-debug
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-debug-devel
kernel-default-optional-debuginfo
gfs2-kmp-64kb
cluster-md-kmp-64kb
cluster-md-kmp-64kb-debuginfo
kernel-64kb-devel
ocfs2-kmp-64kb
kernel-64kb-optional-debuginfo
reiserfs-kmp-64kb
kernel-64kb-debuginfo
kernel-64kb-extra-debuginfo
dlm-kmp-64kb-debuginfo
reiserfs-kmp-64kb-debuginfo
dlm-kmp-64kb
ocfs2-kmp-64kb-debuginfo
kernel-64kb-debugsource
kernel-64kb-extra
kernel-64kb-livepatch-devel
kselftests-kmp-64kb-debuginfo
kernel-64kb
kernel-64kb-optional
gfs2-kmp-64kb-debuginfo
kernel-64kb-devel-debuginfo
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-zfcpdump
kselftests-kmp-64kb
kernel-kvmsmall
kernel-source-vanilla
kernel-default-base-rebuild
kernel-rt-optional-debuginfo
kernel-rt-optional
kernel-rt-extra
reiserfs-kmp-rt-debuginfo
kernel-rt-vdso-debuginfo
kernel-rt-livepatch
kernel-rt-extra-debuginfo
reiserfs-kmp-rt
kselftests-kmp-rt-debuginfo
kernel-rt-livepatch-devel
kselftests-kmp-rt
kernel-rt_debug-vdso
kernel-rt-vdso
kernel-rt_debug-livepatch-devel
kernel-rt_debug-vdso-debuginfo
kernel-azure-extra-debuginfo
kernel-azure-optional
kernel-azure-extra
kernel-azure-devel-debuginfo
cluster-md-kmp-azure-debuginfo
reiserfs-kmp-azure-debuginfo
reiserfs-kmp-azure
dlm-kmp-azure
kselftests-kmp-azure
kernel-azure-vdso-debuginfo
kernel-azure-vdso
gfs2-kmp-azure
ocfs2-kmp-azure-debuginfo
kernel-azure-optional-debuginfo
ocfs2-kmp-azure
kselftests-kmp-azure-debuginfo
dlm-kmp-azure-debuginfo
gfs2-kmp-azure-debuginfo
cluster-md-kmp-azure
kernel-azure-livepatch-devel
kernel-default-vdso-debuginfo
kernel-debug-vdso-debuginfo
kernel-default-vdso
kernel-debug-vdso
kernel-kvmsmall-vdso
kernel-kvmsmall-vdso-debuginfo

Detailed vulnerability description

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

The vulnerability exists due to NULL pointer dereference within the gsmi_get_variable() function in drivers/firmware/google/gsmi.c. A local user can perform a denial of service (DoS) attack.


How to mitigate CVE-2023-52893

Install update from vendor's website.

Sources