NULL pointer dereference in Linux kernel - CVE-2022-48808

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Main Vulnerability Database Vulnerabilities #VU94443

NULL pointer dereference in Linux kernel - CVE-2022-48808

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


Vulnerability identifier: #VU94443
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-2022-48808
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 EXPORT_SYMBOL_GPL() and dsa_switch_shutdown() functions in net/dsa/dsa2.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 Workstation Extension 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Micro
openSUSE Leap Micro
SUSE Linux Enterprise Live Patching
SUSE Real Time Module
Basesystem Module
Development Tools Module
Legacy Module
Public Cloud Module
openSUSE Leap
Ubuntu
kernel-livepatch-5_14_21-150500_55_80-default-debuginfo
kernel-livepatch-5_14_21-150500_13_67-rt
kernel-livepatch-5_14_21-150500_13_67-rt-debuginfo
kernel-livepatch-SLE15-SP5-RT_Update_19-debugsource
kernel-livepatch-5_14_21-150500_55_80-default
kernel-livepatch-SLE15-SP5_Update_19-debugsource
kernel-syms-rt
kernel-rt_debug-vdso
dlm-kmp-rt-debuginfo
kernel-rt_debug-debuginfo
kernel-rt_debug-vdso-debuginfo
kernel-rt_debug-debugsource
dlm-kmp-rt
ocfs2-kmp-rt-debuginfo
cluster-md-kmp-rt
kernel-rt_debug-devel-debuginfo
kernel-rt-debugsource
cluster-md-kmp-rt-debuginfo
gfs2-kmp-rt-debuginfo
kernel-rt-vdso
gfs2-kmp-rt
kernel-rt-devel
kernel-rt_debug-livepatch-devel
ocfs2-kmp-rt
kernel-rt-extra-debuginfo
kernel-rt-optional
kernel-rt-extra
reiserfs-kmp-rt-debuginfo
kernel-rt-livepatch
reiserfs-kmp-rt
kselftests-kmp-rt-debuginfo
kernel-rt-livepatch-devel
kselftests-kmp-rt
kernel-rt-optional-debuginfo
kernel-rt
kernel-rt_debug
kernel-source-rt
kernel-devel-rt
kernel-rt-devel-debuginfo
kernel-rt_debug-devel
kernel-rt-debuginfo
kernel-rt-vdso-debuginfo
kernel-devel-azure
dlm-kmp-azure
kernel-azure-extra
kernel-azure-optional
kernel-azure-devel-debuginfo
kernel-azure-devel
reiserfs-kmp-azure
kernel-azure-extra-debuginfo
cluster-md-kmp-azure-debuginfo
reiserfs-kmp-azure-debuginfo
kernel-azure-debuginfo
kselftests-kmp-azure
kernel-azure-livepatch-devel
cluster-md-kmp-azure
gfs2-kmp-azure-debuginfo
kernel-source-azure
kernel-azure-vdso-debuginfo
kernel-azure-vdso
kernel-azure
gfs2-kmp-azure
ocfs2-kmp-azure-debuginfo
kernel-azure-optional-debuginfo
kernel-azure-debugsource
ocfs2-kmp-azure
kselftests-kmp-azure-debuginfo
dlm-kmp-azure-debuginfo
kernel-syms-azure
dtb-broadcom
dtb-allwinner
dtb-xilinx
dtb-amd
dtb-nvidia
dtb-amlogic
dtb-qcom
dtb-rockchip
kernel-obs-qa
kernel-syms
dtb-aarch64
kernel-obs-build-debugsource
dtb-arm
dtb-amazon
dtb-altera
dtb-lg
dtb-exynos
kernel-obs-build
dtb-sprd
dtb-marvell
dtb-cavium
dtb-hisilicon
dtb-mediatek
dtb-renesas
dtb-apple
dtb-apm
dtb-socionext
dtb-freescale
reiserfs-kmp-default
kernel-default
kernel-kvmsmall
kernel-64kb
kernel-64kb-extra-debuginfo
kernel-default-optional
gfs2-kmp-default-debuginfo
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-64kb-livepatch-devel
gfs2-kmp-64kb-debuginfo
kernel-kvmsmall-vdso-debuginfo
ocfs2-kmp-64kb
dlm-kmp-64kb-debuginfo
reiserfs-kmp-64kb-debuginfo
kernel-64kb-devel
cluster-md-kmp-64kb
kselftests-kmp-64kb-debuginfo
kselftests-kmp-64kb
kernel-64kb-devel-debuginfo
dlm-kmp-64kb
gfs2-kmp-64kb
kernel-64kb-optional
reiserfs-kmp-64kb
cluster-md-kmp-64kb-debuginfo
kernel-64kb-extra
kernel-64kb-optional-debuginfo
ocfs2-kmp-64kb-debuginfo
kernel-64kb-debugsource
kernel-64kb-debuginfo
kernel-debug-debugsource
kernel-kvmsmall-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-livepatch-devel
kernel-default-vdso-debuginfo
kernel-debug-vdso-debuginfo
kernel-default-vdso
kernel-debug-vdso
kernel-kvmsmall-vdso
kernel-debug-debuginfo
kernel-debug-devel-debuginfo
kselftests-kmp-default-debuginfo
kernel-debug-livepatch-devel
kernel-debug-devel
kernel-debug
kernel-devel
kernel-source-vanilla
kernel-macros
kernel-source
kernel-docs-html
kernel-docs
cluster-md-kmp-default-debuginfo
kernel-default-devel-debuginfo
ocfs2-kmp-default
reiserfs-kmp-default-debuginfo
kernel-default-livepatch-devel
kselftests-kmp-default
kernel-default-extra
dlm-kmp-default
kernel-default-livepatch
cluster-md-kmp-default
kernel-default-optional-debuginfo
kernel-default-debuginfo
ocfs2-kmp-default-debuginfo
dlm-kmp-default-debuginfo
gfs2-kmp-default
kernel-default-debugsource
kernel-default-devel
kernel-default-extra-debuginfo
kernel-kvmsmall-devel
kernel-kvmsmall-devel-debuginfo
kernel-default-base-rebuild
kernel-default-base
linux-image-xilinx-zynqmp (Ubuntu package)
linux-image-5.15.0-1035-xilinx-zynqmp (Ubuntu package)
linux-image-raspi-nolpae (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-5.15.0-1058-raspi (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-5.15.0-1065-gcp (Ubuntu package)
linux-image-azure-lts-22.04 (Ubuntu package)
linux-image-5.15.0-1068-azure-fde (Ubuntu package)
linux-image-5.15.0-1068-azure (Ubuntu package)
linux-image-azure-cvm (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-azure-fde (Ubuntu package)
linux-image-azure-fde-lts-22.04 (Ubuntu package)

How to mitigate CVE-2022-48808

Install update from vendor's website.

Linux kernel - addressed in versions 5.15.155, 5.16.10, 5.17
kernel-livepatch-5_14_21-150500_55_80-default-debuginfo - update to 1-150500.11.3.2
kernel-livepatch-5_14_21-150500_13_67-rt - update to 1-150500.11.3.2
kernel-livepatch-5_14_21-150500_13_67-rt-debuginfo - update to 1-150500.11.3.2
kernel-livepatch-SLE15-SP5-RT_Update_19-debugsource - update to 1-150500.11.3.2
kernel-livepatch-5_14_21-150500_55_80-default - update to 1-150500.11.3.2
kernel-livepatch-SLE15-SP5_Update_19-debugsource - update to 1-150500.11.3.2
kernel-syms-rt - update to 5.14.21-150500.13.67.1
kernel-rt_debug-vdso - update to 5.14.21-150500.13.67.3
dlm-kmp-rt-debuginfo - update to 5.14.21-150500.13.67.3
kernel-rt_debug-debuginfo - update to 5.14.21-150500.13.67.3
kernel-rt_debug-vdso-debuginfo - update to 5.14.21-150500.13.67.3
kernel-rt_debug-debugsource - update to 5.14.21-150500.13.67.3
dlm-kmp-rt - update to 5.14.21-150500.13.67.3
ocfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.67.3
cluster-md-kmp-rt - update to 5.14.21-150500.13.67.3
kernel-rt_debug-devel-debuginfo - update to 5.14.21-150500.13.67.3
kernel-rt-debugsource - update to 5.14.21-150500.13.67.3
cluster-md-kmp-rt-debuginfo - update to 5.14.21-150500.13.67.3
gfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.67.3
kernel-rt-vdso - update to 5.14.21-150500.13.67.3
gfs2-kmp-rt - update to 5.14.21-150500.13.67.3
kernel-rt-devel - update to 5.14.21-150500.13.67.3
kernel-rt_debug-livepatch-devel - update to 5.14.21-150500.13.67.3
ocfs2-kmp-rt - update to 5.14.21-150500.13.67.3
kernel-rt-extra-debuginfo - update to 5.14.21-150500.13.67.3
kernel-rt-optional - update to 5.14.21-150500.13.67.3
kernel-rt-extra - update to 5.14.21-150500.13.67.3
reiserfs-kmp-rt-debuginfo - update to 5.14.21-150500.13.67.3
kernel-rt-livepatch - update to 5.14.21-150500.13.67.3
reiserfs-kmp-rt - update to 5.14.21-150500.13.67.3
kselftests-kmp-rt-debuginfo - update to 5.14.21-150500.13.67.3
kernel-rt-livepatch-devel - update to 5.14.21-150500.13.67.3
kselftests-kmp-rt - update to 5.14.21-150500.13.67.3
kernel-rt-optional-debuginfo - update to 5.14.21-150500.13.67.3
kernel-rt - update to 5.14.21-150500.13.67.3
kernel-rt_debug - update to 5.14.21-150500.13.67.3
kernel-source-rt - update to 5.14.21-150500.13.67.3
kernel-devel-rt - update to 5.14.21-150500.13.67.3
kernel-rt-devel-debuginfo - update to 5.14.21-150500.13.67.3
kernel-rt_debug-devel - update to 5.14.21-150500.13.67.3
kernel-rt-debuginfo - update to 5.14.21-150500.13.67.3
kernel-rt-vdso-debuginfo - update to 5.14.21-150500.13.67.3
kernel-devel-azure - update to 5.14.21-150500.33.66.1
dlm-kmp-azure - update to 5.14.21-150500.33.66.1
kernel-azure-extra - update to 5.14.21-150500.33.66.1
kernel-azure-optional - update to 5.14.21-150500.33.66.1
kernel-azure-devel-debuginfo - update to 5.14.21-150500.33.66.1
kernel-azure-devel - update to 5.14.21-150500.33.66.1
reiserfs-kmp-azure - update to 5.14.21-150500.33.66.1
kernel-azure-extra-debuginfo - update to 5.14.21-150500.33.66.1
cluster-md-kmp-azure-debuginfo - update to 5.14.21-150500.33.66.1
reiserfs-kmp-azure-debuginfo - update to 5.14.21-150500.33.66.1
kernel-azure-debuginfo - update to 5.14.21-150500.33.66.1
kselftests-kmp-azure - update to 5.14.21-150500.33.66.1
kernel-azure-livepatch-devel - update to 5.14.21-150500.33.66.1
cluster-md-kmp-azure - update to 5.14.21-150500.33.66.1
gfs2-kmp-azure-debuginfo - update to 5.14.21-150500.33.66.1
kernel-source-azure - update to 5.14.21-150500.33.66.1
kernel-azure-vdso-debuginfo - update to 5.14.21-150500.33.66.1
kernel-azure-vdso - update to 5.14.21-150500.33.66.1
kernel-azure - update to 5.14.21-150500.33.66.1
gfs2-kmp-azure - update to 5.14.21-150500.33.66.1
ocfs2-kmp-azure-debuginfo - update to 5.14.21-150500.33.66.1
kernel-azure-optional-debuginfo - update to 5.14.21-150500.33.66.1
kernel-azure-debugsource - update to 5.14.21-150500.33.66.1
ocfs2-kmp-azure - update to 5.14.21-150500.33.66.1
kselftests-kmp-azure-debuginfo - update to 5.14.21-150500.33.66.1
dlm-kmp-azure-debuginfo - update to 5.14.21-150500.33.66.1
kernel-syms-azure - update to 5.14.21-150500.33.66.1
dtb-broadcom - update to 5.14.21-150500.55.80.1
dtb-allwinner - update to 5.14.21-150500.55.80.1
dtb-xilinx - update to 5.14.21-150500.55.80.1
dtb-amd - update to 5.14.21-150500.55.80.1
dtb-nvidia - update to 5.14.21-150500.55.80.1
dtb-amlogic - update to 5.14.21-150500.55.80.1
dtb-qcom - update to 5.14.21-150500.55.80.1
dtb-rockchip - update to 5.14.21-150500.55.80.1
kernel-obs-qa - update to 5.14.21-150500.55.80.1
kernel-syms - update to 5.14.21-150500.55.80.1
dtb-aarch64 - update to 5.14.21-150500.55.80.1
kernel-obs-build-debugsource - update to 5.14.21-150500.55.80.1
dtb-arm - update to 5.14.21-150500.55.80.1
dtb-amazon - update to 5.14.21-150500.55.80.1
dtb-altera - update to 5.14.21-150500.55.80.1
dtb-lg - update to 5.14.21-150500.55.80.1
dtb-exynos - update to 5.14.21-150500.55.80.1
kernel-obs-build - update to 5.14.21-150500.55.80.1
dtb-sprd - update to 5.14.21-150500.55.80.1
dtb-marvell - update to 5.14.21-150500.55.80.1
dtb-cavium - update to 5.14.21-150500.55.80.1
dtb-hisilicon - update to 5.14.21-150500.55.80.1
dtb-mediatek - update to 5.14.21-150500.55.80.1
dtb-renesas - update to 5.14.21-150500.55.80.1
dtb-apple - update to 5.14.21-150500.55.80.1
dtb-apm - update to 5.14.21-150500.55.80.1
dtb-socionext - update to 5.14.21-150500.55.80.1
dtb-freescale - update to 5.14.21-150500.55.80.1
reiserfs-kmp-default - update to 5.14.21-150500.55.80.2
kernel-default - update to 5.14.21-150500.55.80.2
kernel-kvmsmall - update to 5.14.21-150500.55.80.2
kernel-64kb - update to 5.14.21-150500.55.80.2
kernel-64kb-extra-debuginfo - update to 5.14.21-150500.55.80.2
kernel-default-optional - update to 5.14.21-150500.55.80.2
gfs2-kmp-default-debuginfo - update to 5.14.21-150500.55.80.2
kernel-zfcpdump - update to 5.14.21-150500.55.80.2
kernel-zfcpdump-debuginfo - update to 5.14.21-150500.55.80.2
kernel-zfcpdump-debugsource - update to 5.14.21-150500.55.80.2
kernel-64kb-livepatch-devel - update to 5.14.21-150500.55.80.2
gfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.80.2
kernel-kvmsmall-vdso-debuginfo - update to 5.14.21-150500.55.80.2
ocfs2-kmp-64kb - update to 5.14.21-150500.55.80.2
dlm-kmp-64kb-debuginfo - update to 5.14.21-150500.55.80.2
reiserfs-kmp-64kb-debuginfo - update to 5.14.21-150500.55.80.2
kernel-64kb-devel - update to 5.14.21-150500.55.80.2
cluster-md-kmp-64kb - update to 5.14.21-150500.55.80.2
kselftests-kmp-64kb-debuginfo - update to 5.14.21-150500.55.80.2
kselftests-kmp-64kb - update to 5.14.21-150500.55.80.2
kernel-64kb-devel-debuginfo - update to 5.14.21-150500.55.80.2
dlm-kmp-64kb - update to 5.14.21-150500.55.80.2
gfs2-kmp-64kb - update to 5.14.21-150500.55.80.2
kernel-64kb-optional - update to 5.14.21-150500.55.80.2
reiserfs-kmp-64kb - update to 5.14.21-150500.55.80.2
cluster-md-kmp-64kb-debuginfo - update to 5.14.21-150500.55.80.2
kernel-64kb-extra - update to 5.14.21-150500.55.80.2
kernel-64kb-optional-debuginfo - update to 5.14.21-150500.55.80.2
ocfs2-kmp-64kb-debuginfo - update to 5.14.21-150500.55.80.2
kernel-64kb-debugsource - update to 5.14.21-150500.55.80.2
kernel-64kb-debuginfo - update to 5.14.21-150500.55.80.2
kernel-debug-debugsource - update to 5.14.21-150500.55.80.2
kernel-kvmsmall-debuginfo - update to 5.14.21-150500.55.80.2
kernel-kvmsmall-debugsource - update to 5.14.21-150500.55.80.2
kernel-kvmsmall-livepatch-devel - update to 5.14.21-150500.55.80.2
kernel-default-vdso-debuginfo - update to 5.14.21-150500.55.80.2
kernel-debug-vdso-debuginfo - update to 5.14.21-150500.55.80.2
kernel-default-vdso - update to 5.14.21-150500.55.80.2
kernel-debug-vdso - update to 5.14.21-150500.55.80.2
kernel-kvmsmall-vdso - update to 5.14.21-150500.55.80.2
kernel-debug-debuginfo - update to 5.14.21-150500.55.80.2
kernel-debug-devel-debuginfo - update to 5.14.21-150500.55.80.2
kselftests-kmp-default-debuginfo - update to 5.14.21-150500.55.80.2
kernel-debug-livepatch-devel - update to 5.14.21-150500.55.80.2
kernel-debug-devel - update to 5.14.21-150500.55.80.2
kernel-debug - update to 5.14.21-150500.55.80.2
kernel-devel - update to 5.14.21-150500.55.80.2
kernel-source-vanilla - update to 5.14.21-150500.55.80.2
kernel-macros - update to 5.14.21-150500.55.80.2
kernel-source - update to 5.14.21-150500.55.80.2
kernel-docs-html - update to 5.14.21-150500.55.80.2
kernel-docs - update to 5.14.21-150500.55.80.2
cluster-md-kmp-default-debuginfo - update to 5.14.21-150500.55.80.2
kernel-default-devel-debuginfo - update to 5.14.21-150500.55.80.2
ocfs2-kmp-default - update to 5.14.21-150500.55.80.2
reiserfs-kmp-default-debuginfo - update to 5.14.21-150500.55.80.2
kernel-default-livepatch-devel - update to 5.14.21-150500.55.80.2
kselftests-kmp-default - update to 5.14.21-150500.55.80.2
kernel-default-extra - update to 5.14.21-150500.55.80.2
dlm-kmp-default - update to 5.14.21-150500.55.80.2
kernel-default-livepatch - update to 5.14.21-150500.55.80.2
cluster-md-kmp-default - update to 5.14.21-150500.55.80.2
kernel-default-optional-debuginfo - update to 5.14.21-150500.55.80.2
kernel-default-debuginfo - update to 5.14.21-150500.55.80.2
ocfs2-kmp-default-debuginfo - update to 5.14.21-150500.55.80.2
dlm-kmp-default-debuginfo - update to 5.14.21-150500.55.80.2
gfs2-kmp-default - update to 5.14.21-150500.55.80.2
kernel-default-debugsource - update to 5.14.21-150500.55.80.2
kernel-default-devel - update to 5.14.21-150500.55.80.2
kernel-default-extra-debuginfo - update to 5.14.21-150500.55.80.2
kernel-kvmsmall-devel - update to 5.14.21-150500.55.80.2
kernel-kvmsmall-devel-debuginfo - update to 5.14.21-150500.55.80.2
kernel-default-base-rebuild - update to 5.14.21-150500.55.80.2.150500.6.35.6
kernel-default-base - update to 5.14.21-150500.55.80.2.150500.6.35.6
linux-image-xilinx-zynqmp (Ubuntu package) - update to 5.15.0.1035.39
linux-image-5.15.0-1035-xilinx-zynqmp (Ubuntu package) - update to 5.15.0-1035.39
linux-image-raspi-nolpae (Ubuntu package) - update to 5.15.0.1058.56
linux-image-raspi (Ubuntu package) - update to 5.15.0.1058.56
linux-image-5.15.0-1058-raspi (Ubuntu package) - update to 5.15.0-1058.61
linux-image-gcp (Ubuntu package) - update to 5.15.0.1065.73~20.04.1
linux-image-5.15.0-1065-gcp (Ubuntu package) - update to 5.15.0-1065.73~20.04.1
linux-image-azure-lts-22.04 (Ubuntu package) - update to 5.15.0.1068.66
linux-image-5.15.0-1068-azure-fde (Ubuntu package) - addressed in versions 5.15.0-1068.77.1, 5.15.0-1068.77~20.04.1.1
linux-image-5.15.0-1068-azure (Ubuntu package) - update to 5.15.0-1068.77~20.04.1
linux-image-azure-cvm (Ubuntu package) - update to 5.15.0.1068.77~20.04.1
linux-image-azure (Ubuntu package) - update to 5.15.0.1068.77~20.04.1
linux-image-azure-fde (Ubuntu package) - update to 5.15.0.1068.77~20.04.1.45
linux-image-azure-fde-lts-22.04 (Ubuntu package) - update to 5.15.0.1068.77.45

External References

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