Improper locking in Linux kernel - CVE-2022-48920

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Main Vulnerability Database Vulnerabilities #VU96437

Improper locking in Linux kernel - CVE-2022-48920

Published: August 22, 2024 / Updated: May 12, 2025


Vulnerability identifier: #VU96437
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-2022-48920
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability: No public exploit available
Affected software:
Linux kernel
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise High Availability Extension 12
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Real Time 12
SUSE Linux Enterprise Desktop 15
openSUSE Leap Micro
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Workstation Extension 12
SUSE Linux Enterprise Live Patching
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-5_14_21-150500_55_80-default
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-SLE15-SP5_Update_19-debugsource
kernel-livepatch-5_14_21-150500_55_80-default-debuginfo
cluster-md-kmp-rt-debuginfo
kernel-rt-debugsource
gfs2-kmp-rt
kernel-rt_debug-devel-debuginfo
kernel-syms-rt
kernel-rt-base
gfs2-kmp-rt-debuginfo
kernel-rt-debuginfo
kernel-rt_debug-debuginfo
cluster-md-kmp-rt
dlm-kmp-rt
kernel-rt-devel
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
kernel-azure-base-debuginfo
kernel-devel-azure
kernel-source-azure
kernel-azure
kernel-azure-base
kernel-azure-devel
kernel-azure-debuginfo
kernel-azure-debugsource
kernel-syms-azure
dlm-kmp-default-debuginfo
kernel-default-base-debuginfo
kernel-default-extra-debuginfo
kernel-default-extra
kernel-default-man
ocfs2-kmp-default-debuginfo
kernel-default-kgraft
kernel-default-kgraft-devel
kernel-default-devel-debuginfo
kernel-macros
kernel-default-devel
cluster-md-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
ocfs2-kmp-default
kernel-default-debuginfo
kernel-default-base
kernel-syms
kernel-default-debugsource
dlm-kmp-default
cluster-md-kmp-default
gfs2-kmp-default
kernel-default
kernel-devel
kernel-source
kernel-obs-build
kernel-obs-build-debugsource
kernel-docs
kernel-headers
kernel
kernel-debuginfo
kernel-debugsource
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
bpftool
bpftool-debuginfo
kernel-rt-extra
kernel-rt-optional
kernel-rt-optional-debuginfo
kernel-rt_debug-livepatch-devel
kernel-rt_debug-vdso-debuginfo
kernel-rt_debug-vdso
kernel-rt-vdso
kernel-rt-extra-debuginfo
kselftests-kmp-rt
kernel-rt-vdso-debuginfo
reiserfs-kmp-rt-debuginfo
kernel-rt-livepatch-devel
kselftests-kmp-rt-debuginfo
reiserfs-kmp-rt
kernel-rt-livepatch
ocfs2-kmp-azure
gfs2-kmp-azure-debuginfo
dlm-kmp-azure-debuginfo
kernel-azure-vdso-debuginfo
kernel-azure-vdso
gfs2-kmp-azure
ocfs2-kmp-azure-debuginfo
kselftests-kmp-azure-debuginfo
kernel-azure-optional-debuginfo
dlm-kmp-azure
cluster-md-kmp-azure
kernel-azure-livepatch-devel
kselftests-kmp-azure
reiserfs-kmp-azure-debuginfo
cluster-md-kmp-azure-debuginfo
reiserfs-kmp-azure
kernel-azure-extra-debuginfo
kernel-azure-devel-debuginfo
kernel-azure-optional
kernel-azure-extra
kernel-obs-qa
dtb-broadcom
dtb-allwinner
dtb-xilinx
dtb-amd
dtb-nvidia
dtb-amlogic
dtb-qcom
dtb-rockchip
dtb-exynos
dtb-lg
dtb-altera
dtb-amazon
dtb-arm
dtb-aarch64
dtb-renesas
dtb-marvell
dtb-cavium
dtb-hisilicon
dtb-mediatek
dtb-apple
dtb-apm
dtb-socionext
dtb-freescale
dtb-sprd
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-64kb-extra-debuginfo
kernel-debug-debugsource
kernel-64kb
gfs2-kmp-64kb
kernel-64kb-debuginfo
kernel-64kb-livepatch-devel
kernel-64kb-debugsource
gfs2-kmp-64kb-debuginfo
kernel-64kb-optional-debuginfo
ocfs2-kmp-64kb-debuginfo
kernel-64kb-extra
cluster-md-kmp-64kb-debuginfo
reiserfs-kmp-64kb
ocfs2-kmp-64kb
kernel-64kb-optional
kernel-64kb-devel-debuginfo
kselftests-kmp-64kb
dlm-kmp-64kb
kselftests-kmp-64kb-debuginfo
cluster-md-kmp-64kb
kernel-64kb-devel
reiserfs-kmp-64kb-debuginfo
dlm-kmp-64kb-debuginfo
kernel-kvmsmall-vdso
kernel-zfcpdump
kernel-kvmsmall-devel
kernel-kvmsmall-devel-debuginfo
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-debuginfo
kernel-debug-debuginfo
kernel-debug-devel-debuginfo
kernel-debug-livepatch-devel
kernel-debug-devel
kernel-debug
kernel-source-vanilla
kernel-docs-html
kernel-default-livepatch-devel
kernel-kvmsmall
reiserfs-kmp-default
kernel-default-optional
kselftests-kmp-default-debuginfo
reiserfs-kmp-default-debuginfo
kselftests-kmp-default
kernel-default-livepatch
kernel-default-optional-debuginfo
kernel-default-base-rebuild

Detailed vulnerability description

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

The vulnerability exists due to improper locking within the btrfs_cleanup_pending_block_groups() function in fs/btrfs/transaction.c. A local user can perform a denial of service (DoS) attack.


How to mitigate CVE-2022-48920

Install update from vendor's website.

Sources