Improper locking in Linux kernel - CVE-2023-52786

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Main Vulnerability Database Vulnerabilities #VU92014

Improper locking in Linux kernel - CVE-2023-52786

Published: June 13, 2024 / Updated: May 13, 2025


Vulnerability identifier: #VU92014
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-2023-52786
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 ext4_dio_write_iter() function in fs/ext4/file.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 Server 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Real Time Module
Basesystem Module
SUSE Linux Enterprise Live Patching
Public Cloud Module
Legacy Module
Development Tools Module
openSUSE Leap
kernel-livepatch-6_4_0-150600_10_5-rt-debuginfo
kernel-livepatch-6_4_0-150600_10_5-rt
kernel-livepatch-SLE15-SP6-RT_Update_1-debugsource
kernel-livepatch-6_4_0-150600_23_14-default
kernel-livepatch-6_4_0-150600_23_14-default-debuginfo
kernel-livepatch-SLE15-SP6_Update_2-debugsource
kernel-syms-azure
kernel-devel-azure
kernel-azure-vdso-debuginfo
kernel-azure-vdso
dlm-kmp-azure-debuginfo
kernel-azure-devel-debuginfo
dlm-kmp-azure
kernel-azure-livepatch-devel
cluster-md-kmp-azure
kernel-azure-devel
gfs2-kmp-azure-debuginfo
kernel-azure-optional
kernel-azure
kernel-source-azure
reiserfs-kmp-azure-debuginfo
kernel-azure-extra
kernel-azure-extra-debuginfo
ocfs2-kmp-azure
reiserfs-kmp-azure
cluster-md-kmp-azure-debuginfo
ocfs2-kmp-azure-debuginfo
kernel-azure-debugsource
kernel-azure-optional-debuginfo
kernel-azure-debuginfo
gfs2-kmp-azure
kselftests-kmp-azure
kselftests-kmp-azure-debuginfo
dlm-kmp-rt-debuginfo
ocfs2-kmp-rt
kselftests-kmp-rt
kernel-rt_debug-debuginfo
kernel-rt_debug-vdso-debuginfo
kernel-rt-livepatch-devel
kernel-rt-optional-debuginfo
dlm-kmp-rt
kernel-rt-extra
reiserfs-kmp-rt
kernel-rt-debugsource
kernel-syms-rt
kernel-rt-optional
ocfs2-kmp-rt-debuginfo
kernel-devel-rt
kernel-source-rt
kernel-rt_debug
kernel-rt
kernel-rt-vdso-debuginfo
cluster-md-kmp-rt
kernel-rt_debug-livepatch-devel
kernel-rt-debuginfo
gfs2-kmp-rt
kernel-rt-extra-debuginfo
kernel-rt_debug-devel
reiserfs-kmp-rt-debuginfo
kernel-rt_debug-debugsource
kernel-rt_debug-devel-debuginfo
kselftests-kmp-rt-debuginfo
kernel-rt_debug-vdso
kernel-rt-vdso
kernel-rt-devel-debuginfo
gfs2-kmp-rt-debuginfo
kernel-rt-devel
cluster-md-kmp-rt-debuginfo
dtb-lg
dtb-nvidia
cluster-md-kmp-64kb-debuginfo
dtb-amazon
dtb-renesas
kernel-64kb-optional
dtb-xilinx
dtb-exynos
dtb-qcom
kernel-64kb-optional-debuginfo
dtb-allwinner
cluster-md-kmp-64kb
kernel-64kb-extra-debuginfo
dtb-altera
ocfs2-kmp-64kb-debuginfo
dtb-rockchip
dtb-amd
kernel-64kb
kselftests-kmp-64kb
kselftests-kmp-64kb-debuginfo
kernel-64kb-debugsource
dtb-aarch64
dlm-kmp-64kb
kernel-64kb-devel-debuginfo
dtb-cavium
dtb-socionext
dtb-hisilicon
kernel-64kb-livepatch-devel
dtb-apple
dlm-kmp-64kb-debuginfo
kernel-64kb-debuginfo
dtb-sprd
dtb-broadcom
kernel-64kb-extra
reiserfs-kmp-64kb
dtb-freescale
gfs2-kmp-64kb-debuginfo
dtb-arm
dtb-apm
dtb-mediatek
ocfs2-kmp-64kb
gfs2-kmp-64kb
dtb-marvell
reiserfs-kmp-64kb-debuginfo
kernel-64kb-devel
dtb-amlogic
kernel-obs-build-debugsource
kernel-default-debuginfo
kernel-default-vdso-debuginfo
kernel-default-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debuginfo
kernel-kvmsmall-livepatch-devel
kernel-kvmsmall-devel
ocfs2-kmp-default-debuginfo
kernel-default-livepatch
kernel-obs-build
kernel-kvmsmall-vdso
kernel-debug-vdso
kernel-debug-vdso-debuginfo
kernel-debug-debuginfo
kernel-debug-devel-debuginfo
kernel-debug-livepatch-devel
kernel-debug-devel
kernel-debug-debugsource
kernel-debug
kernel-macros
kernel-docs-html
kernel-source
kernel-devel
kernel-source-vanilla
kernel-default-devel
kernel-docs
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-zfcpdump
kernel-kvmsmall
kernel-default
kernel-obs-qa
cluster-md-kmp-default
cluster-md-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
kernel-default-debugsource
dlm-kmp-default
kernel-default-livepatch-devel
kernel-default-devel-debuginfo
reiserfs-kmp-default-debuginfo
reiserfs-kmp-default
kselftests-kmp-default
dlm-kmp-default-debuginfo
kselftests-kmp-default-debuginfo
gfs2-kmp-default
kernel-default-optional
kernel-default-optional-debuginfo
kernel-default-extra
ocfs2-kmp-default
kernel-default-extra-debuginfo
kernel-syms
kernel-default-base-rebuild
kernel-default-base

How to mitigate CVE-2023-52786

Install update from vendor's website.

Linux kernel - addressed in versions 6.5.13, 6.6.3, 6.7
kernel-livepatch-6_4_0-150600_10_5-rt-debuginfo - update to 1-150600.1.5.1
kernel-livepatch-6_4_0-150600_10_5-rt - update to 1-150600.1.5.1
kernel-livepatch-SLE15-SP6-RT_Update_1-debugsource - update to 1-150600.1.5.1
kernel-livepatch-6_4_0-150600_23_14-default - update to 1-150600.13.3.2
kernel-livepatch-6_4_0-150600_23_14-default-debuginfo - update to 1-150600.13.3.2
kernel-livepatch-SLE15-SP6_Update_2-debugsource - update to 1-150600.13.3.2
kernel-syms-azure - update to 6.4.0-150600.8.8.1
kernel-devel-azure - update to 6.4.0-150600.8.8.2
kernel-azure-vdso-debuginfo - update to 6.4.0-150600.8.8.2
kernel-azure-vdso - update to 6.4.0-150600.8.8.2
dlm-kmp-azure-debuginfo - update to 6.4.0-150600.8.8.2
kernel-azure-devel-debuginfo - update to 6.4.0-150600.8.8.2
dlm-kmp-azure - update to 6.4.0-150600.8.8.2
kernel-azure-livepatch-devel - update to 6.4.0-150600.8.8.2
cluster-md-kmp-azure - update to 6.4.0-150600.8.8.2
kernel-azure-devel - update to 6.4.0-150600.8.8.2
gfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.8.2
kernel-azure-optional - update to 6.4.0-150600.8.8.2
kernel-azure - update to 6.4.0-150600.8.8.2
kernel-source-azure - update to 6.4.0-150600.8.8.2
reiserfs-kmp-azure-debuginfo - update to 6.4.0-150600.8.8.2
kernel-azure-extra - update to 6.4.0-150600.8.8.2
kernel-azure-extra-debuginfo - update to 6.4.0-150600.8.8.2
ocfs2-kmp-azure - update to 6.4.0-150600.8.8.2
reiserfs-kmp-azure - update to 6.4.0-150600.8.8.2
cluster-md-kmp-azure-debuginfo - update to 6.4.0-150600.8.8.2
ocfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.8.2
kernel-azure-debugsource - update to 6.4.0-150600.8.8.2
kernel-azure-optional-debuginfo - update to 6.4.0-150600.8.8.2
kernel-azure-debuginfo - update to 6.4.0-150600.8.8.2
gfs2-kmp-azure - update to 6.4.0-150600.8.8.2
kselftests-kmp-azure - update to 6.4.0-150600.8.8.2
kselftests-kmp-azure-debuginfo - update to 6.4.0-150600.8.8.2
dlm-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
ocfs2-kmp-rt - update to 6.4.0-150600.10.5.1
kselftests-kmp-rt - update to 6.4.0-150600.10.5.1
kernel-rt_debug-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt_debug-vdso-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt-livepatch-devel - update to 6.4.0-150600.10.5.1
kernel-rt-optional-debuginfo - update to 6.4.0-150600.10.5.1
dlm-kmp-rt - update to 6.4.0-150600.10.5.1
kernel-rt-extra - update to 6.4.0-150600.10.5.1
reiserfs-kmp-rt - update to 6.4.0-150600.10.5.1
kernel-rt-debugsource - update to 6.4.0-150600.10.5.1
kernel-syms-rt - update to 6.4.0-150600.10.5.1
kernel-rt-optional - update to 6.4.0-150600.10.5.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
kernel-devel-rt - update to 6.4.0-150600.10.5.1
kernel-source-rt - update to 6.4.0-150600.10.5.1
kernel-rt_debug - update to 6.4.0-150600.10.5.1
kernel-rt - update to 6.4.0-150600.10.5.1
kernel-rt-vdso-debuginfo - update to 6.4.0-150600.10.5.1
cluster-md-kmp-rt - update to 6.4.0-150600.10.5.1
kernel-rt_debug-livepatch-devel - update to 6.4.0-150600.10.5.1
kernel-rt-debuginfo - update to 6.4.0-150600.10.5.1
gfs2-kmp-rt - update to 6.4.0-150600.10.5.1
kernel-rt-extra-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt_debug-devel - update to 6.4.0-150600.10.5.1
reiserfs-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt_debug-debugsource - update to 6.4.0-150600.10.5.1
kernel-rt_debug-devel-debuginfo - update to 6.4.0-150600.10.5.1
kselftests-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt_debug-vdso - update to 6.4.0-150600.10.5.1
kernel-rt-vdso - update to 6.4.0-150600.10.5.1
kernel-rt-devel-debuginfo - update to 6.4.0-150600.10.5.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
kernel-rt-devel - update to 6.4.0-150600.10.5.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150600.10.5.1
dtb-lg - update to 6.4.0-150600.23.14.1
dtb-nvidia - update to 6.4.0-150600.23.14.1
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.14.1
dtb-amazon - update to 6.4.0-150600.23.14.1
dtb-renesas - update to 6.4.0-150600.23.14.1
kernel-64kb-optional - update to 6.4.0-150600.23.14.1
dtb-xilinx - update to 6.4.0-150600.23.14.1
dtb-exynos - update to 6.4.0-150600.23.14.1
dtb-qcom - update to 6.4.0-150600.23.14.1
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.14.1
dtb-allwinner - update to 6.4.0-150600.23.14.1
cluster-md-kmp-64kb - update to 6.4.0-150600.23.14.1
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.14.1
dtb-altera - update to 6.4.0-150600.23.14.1
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.14.1
dtb-rockchip - update to 6.4.0-150600.23.14.1
dtb-amd - update to 6.4.0-150600.23.14.1
kernel-64kb - update to 6.4.0-150600.23.14.1
kselftests-kmp-64kb - update to 6.4.0-150600.23.14.1
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.14.1
kernel-64kb-debugsource - update to 6.4.0-150600.23.14.1
dtb-aarch64 - update to 6.4.0-150600.23.14.1
dlm-kmp-64kb - update to 6.4.0-150600.23.14.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150600.23.14.1
dtb-cavium - update to 6.4.0-150600.23.14.1
dtb-socionext - update to 6.4.0-150600.23.14.1
dtb-hisilicon - update to 6.4.0-150600.23.14.1
kernel-64kb-livepatch-devel - update to 6.4.0-150600.23.14.1
dtb-apple - update to 6.4.0-150600.23.14.1
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.14.1
kernel-64kb-debuginfo - update to 6.4.0-150600.23.14.1
dtb-sprd - update to 6.4.0-150600.23.14.1
dtb-broadcom - update to 6.4.0-150600.23.14.1
kernel-64kb-extra - update to 6.4.0-150600.23.14.1
reiserfs-kmp-64kb - update to 6.4.0-150600.23.14.1
dtb-freescale - update to 6.4.0-150600.23.14.1
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.14.1
dtb-arm - update to 6.4.0-150600.23.14.1
dtb-apm - update to 6.4.0-150600.23.14.1
dtb-mediatek - update to 6.4.0-150600.23.14.1
ocfs2-kmp-64kb - update to 6.4.0-150600.23.14.1
gfs2-kmp-64kb - update to 6.4.0-150600.23.14.1
dtb-marvell - update to 6.4.0-150600.23.14.1
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.14.1
kernel-64kb-devel - update to 6.4.0-150600.23.14.1
dtb-amlogic - update to 6.4.0-150600.23.14.1
kernel-obs-build-debugsource - update to 6.4.0-150600.23.14.2
kernel-default-debuginfo - update to 6.4.0-150600.23.14.2
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.14.2
kernel-default-vdso - update to 6.4.0-150600.23.14.2
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.14.2
kernel-kvmsmall-debugsource - update to 6.4.0-150600.23.14.2
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.14.2
kernel-kvmsmall-debuginfo - update to 6.4.0-150600.23.14.2
kernel-kvmsmall-livepatch-devel - update to 6.4.0-150600.23.14.2
kernel-kvmsmall-devel - update to 6.4.0-150600.23.14.2
ocfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.14.2
kernel-default-livepatch - update to 6.4.0-150600.23.14.2
kernel-obs-build - update to 6.4.0-150600.23.14.2
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.14.2
kernel-debug-vdso - update to 6.4.0-150600.23.14.2
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.14.2
kernel-debug-debuginfo - update to 6.4.0-150600.23.14.2
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.14.2
kernel-debug-livepatch-devel - update to 6.4.0-150600.23.14.2
kernel-debug-devel - update to 6.4.0-150600.23.14.2
kernel-debug-debugsource - update to 6.4.0-150600.23.14.2
kernel-debug - update to 6.4.0-150600.23.14.2
kernel-macros - update to 6.4.0-150600.23.14.2
kernel-docs-html - update to 6.4.0-150600.23.14.2
kernel-source - update to 6.4.0-150600.23.14.2
kernel-devel - update to 6.4.0-150600.23.14.2
kernel-source-vanilla - update to 6.4.0-150600.23.14.2
kernel-default-devel - update to 6.4.0-150600.23.14.2
kernel-docs - update to 6.4.0-150600.23.14.2
kernel-zfcpdump-debugsource - update to 6.4.0-150600.23.14.2
kernel-zfcpdump-debuginfo - update to 6.4.0-150600.23.14.2
kernel-zfcpdump - update to 6.4.0-150600.23.14.2
kernel-kvmsmall - update to 6.4.0-150600.23.14.2
kernel-default - update to 6.4.0-150600.23.14.2
kernel-obs-qa - update to 6.4.0-150600.23.14.2
cluster-md-kmp-default - update to 6.4.0-150600.23.14.2
cluster-md-kmp-default-debuginfo - update to 6.4.0-150600.23.14.2
gfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.14.2
kernel-default-debugsource - update to 6.4.0-150600.23.14.2
dlm-kmp-default - update to 6.4.0-150600.23.14.2
kernel-default-livepatch-devel - update to 6.4.0-150600.23.14.2
kernel-default-devel-debuginfo - update to 6.4.0-150600.23.14.2
reiserfs-kmp-default-debuginfo - update to 6.4.0-150600.23.14.2
reiserfs-kmp-default - update to 6.4.0-150600.23.14.2
kselftests-kmp-default - update to 6.4.0-150600.23.14.2
dlm-kmp-default-debuginfo - update to 6.4.0-150600.23.14.2
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.14.2
gfs2-kmp-default - update to 6.4.0-150600.23.14.2
kernel-default-optional - update to 6.4.0-150600.23.14.2
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.14.2
kernel-default-extra - update to 6.4.0-150600.23.14.2
ocfs2-kmp-default - update to 6.4.0-150600.23.14.2
kernel-default-extra-debuginfo - update to 6.4.0-150600.23.14.2
kernel-syms - update to 6.4.0-150600.23.14.2
kernel-default-base-rebuild - update to 6.4.0-150600.23.14.2.150600.12.4.3
kernel-default-base - update to 6.4.0-150600.23.14.2.150600.12.4.3

External References

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