Improper locking in Linux kernel - CVE-2022-49446

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Main Vulnerability Database Vulnerabilities #VU104656

Improper locking in Linux kernel - CVE-2022-49446

Published: February 26, 2025 / Updated: May 11, 2025


Vulnerability identifier: #VU104656
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-2022-49446
CWE-ID: CWE-667
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 improper locking within the capability_show(), activate_show(), activate_store() and nvdimm_bus_firmware_visible() functions in drivers/nvdimm/core.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Enterprise Server 15 SP3 Business Critical
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Real Time 15
SUSE Manager Server
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
SUSE Enterprise Storage
SUSE Linux Enterprise Live Patching
openSUSE Leap
kernel-livepatch-5_3_18-150300_59_201-default
kernel-livepatch-5_3_18-150300_59_201-default-debuginfo
kernel-livepatch-SLE15-SP3_Update_56-debugsource
kernel-livepatch-5_3_18-150300_59_201-preempt
kernel-livepatch-5_3_18-150300_59_201-preempt-debuginfo
kernel-livepatch-SLE15-SP5_Update_25-debugsource
kernel-livepatch-5_14_21-150500_55_100-default
kernel-livepatch-5_14_21-150500_55_100-default-debuginfo
kernel-default-optional
ocfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kernel-default-devel
ocfs2-kmp-default
kernel-default-extra
kernel-default-devel-debuginfo
kernel-obs-build-debugsource
kernel-syms
gfs2-kmp-default-debuginfo
kselftests-kmp-default
kernel-default
kernel-default-livepatch-devel
dlm-kmp-preempt-debuginfo
kselftests-kmp-preempt-debuginfo
gfs2-kmp-preempt
kernel-preempt-debuginfo
gfs2-kmp-preempt-debuginfo
kernel-preempt-debugsource
kernel-preempt-devel
kernel-preempt-devel-debuginfo
ocfs2-kmp-preempt
kernel-preempt-extra
kernel-kvmsmall-debuginfo
kernel-docs
kernel-docs-html
kernel-macros
kernel-source
kernel-devel
kernel-source-vanilla
kernel-kvmsmall
kernel-debug
kernel-debug-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-devel
kernel-debug-devel
kernel-debug-devel-debuginfo
kernel-debug-debugsource
cluster-md-kmp-preempt-debuginfo
kernel-obs-build
kselftests-kmp-default-debuginfo
kernel-obs-qa
cluster-md-kmp-default
kernel-default-optional-debuginfo
kernel-default-livepatch
dlm-kmp-default-debuginfo
kernel-default-debuginfo
kernel-default-debugsource
reiserfs-kmp-default-debuginfo
kernel-default-extra-debuginfo
reiserfs-kmp-default
dlm-kmp-default
gfs2-kmp-default
dtb-socionext
dtb-mediatek
gfs2-kmp-64kb
kernel-64kb-extra-debuginfo
dtb-freescale
kselftests-kmp-64kb
dtb-nvidia
dtb-amd
dtb-lg
ocfs2-kmp-64kb-debuginfo
dtb-cavium
cluster-md-kmp-64kb
reiserfs-kmp-64kb
dtb-marvell
dtb-qcom
kernel-64kb-optional-debuginfo
dtb-apm
dtb-amlogic
kernel-64kb-optional
dtb-allwinner
dtb-rockchip
reiserfs-kmp-64kb-debuginfo
dtb-arm
dtb-zte
dtb-al
dlm-kmp-64kb-debuginfo
dtb-renesas
kernel-64kb-debugsource
ocfs2-kmp-64kb
dtb-broadcom
kernel-64kb-extra
kernel-64kb
kselftests-kmp-64kb-debuginfo
ocfs2-kmp-preempt-debuginfo
kernel-preempt-extra-debuginfo
kernel-preempt-optional
kernel-preempt-optional-debuginfo
reiserfs-kmp-preempt-debuginfo
dlm-kmp-preempt
cluster-md-kmp-preempt
kselftests-kmp-preempt
kernel-preempt
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
dtb-aarch64
kernel-64kb-devel-debuginfo
dlm-kmp-64kb
cluster-md-kmp-64kb-debuginfo
reiserfs-kmp-preempt
dtb-exynos
dtb-hisilicon
dtb-xilinx
dtb-sprd
dtb-altera
kernel-64kb-devel
kernel-64kb-debuginfo
gfs2-kmp-64kb-debuginfo
kernel-default-base
kernel-default-base-rebuild
kernel-source-rt
kernel-rt-debugsource
kernel-rt-debuginfo
kernel-rt
kernel-rt_debug-devel-debuginfo
cluster-md-kmp-rt
kselftests-kmp-rt
kernel-syms-rt
reiserfs-kmp-rt
kernel-rt-devel
kernel-rt_debug-devel
dlm-kmp-rt
kernel-devel-rt
reiserfs-kmp-rt-debuginfo
kernel-rt-vdso-debuginfo
kernel-rt-extra
gfs2-kmp-rt
kernel-rt-livepatch
kernel-rt-vdso
kernel-rt_debug
ocfs2-kmp-rt
dlm-kmp-rt-debuginfo
kernel-rt-optional-debuginfo
kernel-rt_debug-debugsource
ocfs2-kmp-rt-debuginfo
kernel-rt-devel-debuginfo
kernel-rt_debug-vdso
kernel-rt-livepatch-devel
kernel-rt-optional
cluster-md-kmp-rt-debuginfo
gfs2-kmp-rt-debuginfo
kernel-rt_debug-debuginfo
kselftests-kmp-rt-debuginfo
kernel-rt-extra-debuginfo
kernel-rt_debug-vdso-debuginfo
kernel-kvmsmall-vdso-debuginfo
kernel-default-vdso
kernel-kvmsmall-vdso
kernel-default-vdso-debuginfo
kernel-debug-vdso-debuginfo
kernel-debug-vdso
dtb-apple
dtb-amazon

How to mitigate CVE-2022-49446

Install update from vendor's website.

Linux kernel - addressed in versions 5.10.121, 5.15.46, 5.17.14, 5.18.3, 5.19
kernel-livepatch-5_3_18-150300_59_201-default - update to 1-150300.7.3.1
kernel-livepatch-5_3_18-150300_59_201-default-debuginfo - update to 1-150300.7.3.1
kernel-livepatch-SLE15-SP3_Update_56-debugsource - update to 1-150300.7.3.1
kernel-livepatch-5_3_18-150300_59_201-preempt - update to 1-150300.7.3.1
kernel-livepatch-5_3_18-150300_59_201-preempt-debuginfo - update to 1-150300.7.3.1
kernel-livepatch-SLE15-SP5_Update_25-debugsource - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_100-default - update to 1-150500.11.3.1
kernel-livepatch-5_14_21-150500_55_100-default-debuginfo - update to 1-150500.11.3.1
kernel-default-optional - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
ocfs2-kmp-default-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
cluster-md-kmp-default-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-default-devel - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
ocfs2-kmp-default - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-default-extra - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-default-devel-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-obs-build-debugsource - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-syms - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
gfs2-kmp-default-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kselftests-kmp-default - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-default - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-default-livepatch-devel - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dlm-kmp-preempt-debuginfo - update to 5.3.18-150300.59.201.1
kselftests-kmp-preempt-debuginfo - update to 5.3.18-150300.59.201.1
gfs2-kmp-preempt - update to 5.3.18-150300.59.201.1
kernel-preempt-debuginfo - update to 5.3.18-150300.59.201.1
gfs2-kmp-preempt-debuginfo - update to 5.3.18-150300.59.201.1
kernel-preempt-debugsource - update to 5.3.18-150300.59.201.1
kernel-preempt-devel - update to 5.3.18-150300.59.201.1
kernel-preempt-devel-debuginfo - update to 5.3.18-150300.59.201.1
ocfs2-kmp-preempt - update to 5.3.18-150300.59.201.1
kernel-preempt-extra - update to 5.3.18-150300.59.201.1
kernel-kvmsmall-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-docs - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-docs-html - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-macros - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-source - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-devel - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-source-vanilla - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-kvmsmall - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-debug - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-debug-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-kvmsmall-debugsource - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-kvmsmall-devel-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-kvmsmall-devel - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-debug-devel - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-debug-devel-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-debug-debugsource - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
cluster-md-kmp-preempt-debuginfo - update to 5.3.18-150300.59.201.1
kernel-obs-build - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kselftests-kmp-default-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-obs-qa - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
cluster-md-kmp-default - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-default-optional-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-default-livepatch - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dlm-kmp-default-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-default-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-default-debugsource - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
reiserfs-kmp-default-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-default-extra-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
reiserfs-kmp-default - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dlm-kmp-default - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
gfs2-kmp-default - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-socionext - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-mediatek - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
gfs2-kmp-64kb - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-64kb-extra-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-freescale - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kselftests-kmp-64kb - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-nvidia - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-amd - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-lg - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
ocfs2-kmp-64kb-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-cavium - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
cluster-md-kmp-64kb - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
reiserfs-kmp-64kb - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-marvell - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-qcom - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-64kb-optional-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-apm - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-amlogic - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-64kb-optional - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-allwinner - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-rockchip - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
reiserfs-kmp-64kb-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-arm - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-zte - update to 5.3.18-150300.59.201.1
dtb-al - update to 5.3.18-150300.59.201.1
dlm-kmp-64kb-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-renesas - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-64kb-debugsource - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
ocfs2-kmp-64kb - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-broadcom - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-64kb-extra - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-64kb - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kselftests-kmp-64kb-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
ocfs2-kmp-preempt-debuginfo - update to 5.3.18-150300.59.201.1
kernel-preempt-extra-debuginfo - update to 5.3.18-150300.59.201.1
kernel-preempt-optional - update to 5.3.18-150300.59.201.1
kernel-preempt-optional-debuginfo - update to 5.3.18-150300.59.201.1
reiserfs-kmp-preempt-debuginfo - update to 5.3.18-150300.59.201.1
dlm-kmp-preempt - update to 5.3.18-150300.59.201.1
cluster-md-kmp-preempt - update to 5.3.18-150300.59.201.1
kselftests-kmp-preempt - update to 5.3.18-150300.59.201.1
kernel-preempt - update to 5.3.18-150300.59.201.1
kernel-zfcpdump - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-zfcpdump-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-zfcpdump-debugsource - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-aarch64 - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-64kb-devel-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dlm-kmp-64kb - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
cluster-md-kmp-64kb-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
reiserfs-kmp-preempt - update to 5.3.18-150300.59.201.1
dtb-exynos - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-hisilicon - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-xilinx - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-sprd - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
dtb-altera - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-64kb-devel - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-64kb-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
gfs2-kmp-64kb-debuginfo - addressed in versions 5.3.18-150300.59.201.1, 5.14.21-150500.55.100.1
kernel-default-base - addressed in versions 5.3.18-150300.59.201.1.150300.18.120.1, 5.14.21-150500.55.100.1.150500.6.47.1
kernel-default-base-rebuild - addressed in versions 5.3.18-150300.59.201.1.150300.18.120.1, 5.14.21-150500.55.100.1.150500.6.47.1
kernel-source-rt - addressed in versions 5.3.18-150300.205.1, 5.14.21-150500.13.91.1
kernel-rt-debugsource - addressed in versions 5.3.18-150300.205.1, 5.14.21-150500.13.91.1
kernel-rt-debuginfo - addressed in versions 5.3.18-150300.205.1, 5.14.21-150500.13.91.1
kernel-rt - addressed in versions 5.3.18-150300.205.1, 5.14.21-150500.13.91.1
kernel-rt_debug-devel-debuginfo - update to 5.14.21-150500.13.91.1
cluster-md-kmp-rt - update to 5.14.21-150500.13.91.1
kselftests-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-syms-rt - update to 5.14.21-150500.13.91.1
reiserfs-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-rt-devel - update to 5.14.21-150500.13.91.1
kernel-rt_debug-devel - update to 5.14.21-150500.13.91.1
dlm-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-devel-rt - update to 5.14.21-150500.13.91.1
reiserfs-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-vdso-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-extra - update to 5.14.21-150500.13.91.1
gfs2-kmp-rt - update to 5.14.21-150500.13.91.1
kernel-rt-livepatch - update to 5.14.21-150500.13.91.1
kernel-rt-vdso - update to 5.14.21-150500.13.91.1
kernel-rt_debug - update to 5.14.21-150500.13.91.1
ocfs2-kmp-rt - update to 5.14.21-150500.13.91.1
dlm-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-optional-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt_debug-debugsource - update to 5.14.21-150500.13.91.1
ocfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-devel-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt_debug-vdso - update to 5.14.21-150500.13.91.1
kernel-rt-livepatch-devel - update to 5.14.21-150500.13.91.1
kernel-rt-optional - update to 5.14.21-150500.13.91.1
cluster-md-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
gfs2-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt_debug-debuginfo - update to 5.14.21-150500.13.91.1
kselftests-kmp-rt-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt-extra-debuginfo - update to 5.14.21-150500.13.91.1
kernel-rt_debug-vdso-debuginfo - update to 5.14.21-150500.13.91.1
kernel-kvmsmall-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-default-vdso - update to 5.14.21-150500.55.100.1
kernel-kvmsmall-vdso - update to 5.14.21-150500.55.100.1
kernel-default-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-debug-vdso-debuginfo - update to 5.14.21-150500.55.100.1
kernel-debug-vdso - update to 5.14.21-150500.55.100.1
dtb-apple - update to 5.14.21-150500.55.100.1
dtb-amazon - update to 5.14.21-150500.55.100.1

External References

Related Security Bulletins