Input validation error in Linux kernel - CVE-2023-53461

 

Input validation error in Linux kernel - CVE-2023-53461

Published: October 1, 2025 / Updated: October 27, 2025


Vulnerability identifier: #VU116333
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-2023-53461
CWE-ID: CWE-20
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 input validation within the io_ring_exit_work() function in io_uring/io_uring.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Workstation Extension 15
Development Tools Module
SUSE Real Time Module
SUSE Linux Enterprise Live Patching
Public Cloud Module
Legacy Module
Basesystem Module
openSUSE Leap
kernel-livepatch-6_4_0-150600_10_55-rt
kernel-livepatch-6_4_0-150600_10_55-rt-debuginfo
kernel-livepatch-SLE15-SP6-RT_Update_16-debugsource
kernel-livepatch-6_4_0-150600_23_73-default
kernel-livepatch-SLE15-SP6_Update_16-debugsource
kernel-livepatch-6_4_0-150600_23_73-default-debuginfo
kernel-livepatch-SLE15-SP7-RT_Update_6-debugsource
kernel-livepatch-6_4_0-150700_7_22-rt-debuginfo
kernel-livepatch-6_4_0-150700_7_22-rt
kernel-livepatch-6_4_0-150700_53_22-default
kernel-livepatch-6_4_0-150700_53_22-default-debuginfo
kernel-livepatch-SLE15-SP7_Update_6-debugsource
kernel-source-azure
cluster-md-kmp-azure-debuginfo
kernel-azure-extra
dlm-kmp-azure-debuginfo
kernel-azure-optional
kernel-azure-debugsource
kernel-azure-optional-debuginfo
kselftests-kmp-azure
kernel-azure-extra-debuginfo
gfs2-kmp-azure-debuginfo
ocfs2-kmp-azure-debuginfo
kernel-devel-azure
cluster-md-kmp-azure
dlm-kmp-azure
kernel-azure-devel
kernel-azure-debuginfo
reiserfs-kmp-azure-debuginfo
ocfs2-kmp-azure
kselftests-kmp-azure-debuginfo
kernel-syms-azure
gfs2-kmp-azure
kernel-azure-devel-debuginfo
reiserfs-kmp-azure
kernel-azure
kernel-azure-vdso-debuginfo
kernel-azure-vdso
gfs2-kmp-rt-debuginfo
kernel-rt-optional-debuginfo
kernel-rt_debug
kernel-rt
kernel-source-rt
kernel-devel-rt
kernel-rt_debug-devel-debuginfo
kernel-rt-devel-debuginfo
kernel-rt_debug-debugsource
kernel-rt-devel
kselftests-kmp-rt
dlm-kmp-rt
cluster-md-kmp-rt
ocfs2-kmp-rt
kernel-rt-debugsource
ocfs2-kmp-rt-debuginfo
kernel-syms-rt
cluster-md-kmp-rt-debuginfo
gfs2-kmp-rt
reiserfs-kmp-rt
kernel-rt_debug-devel
dlm-kmp-rt-debuginfo
kernel-rt_debug-debuginfo
kernel-rt-debuginfo
kernel-rt-vdso-debuginfo
kernel-rt-optional
reiserfs-kmp-rt-debuginfo
kernel-rt-livepatch-devel
kernel-rt-extra-debuginfo
kernel-rt_debug-vdso-debuginfo
kernel-rt_debug-vdso
kselftests-kmp-rt-debuginfo
kernel-rt-vdso
kernel-rt-extra
kernel-macros
kernel-docs-html
gfs2-kmp-default
kernel-docs
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-default-extra
kernel-default-extra-debuginfo
kernel-kvmsmall-vdso
kernel-source-vanilla
kernel-devel
kernel-debug
kernel-debug-debuginfo
kernel-debug-devel
kernel-debug-devel-debuginfo
kernel-debug-debugsource
kernel-obs-build-debugsource
gfs2-kmp-default-debuginfo
dlm-kmp-default-debuginfo
dlm-kmp-default
ocfs2-kmp-default-debuginfo
ocfs2-kmp-default
cluster-md-kmp-default
cluster-md-kmp-default-debuginfo
reiserfs-kmp-default-debuginfo
reiserfs-kmp-default
kernel-default-debugsource
kernel-default-debuginfo
kernel-default
kernel-source
kernel-obs-build
kernel-syms
kernel-default-vdso
kernel-zfcpdump-debuginfo
dtb-socionext
ocfs2-kmp-64kb-debuginfo
dtb-allwinner
kernel-64kb-debugsource
cluster-md-kmp-64kb-debuginfo
dtb-mediatek
kernel-64kb-extra-debuginfo
dtb-freescale
kernel-64kb-optional-debuginfo
kernel-64kb-debuginfo
kernel-64kb-devel-debuginfo
dtb-arm
kselftests-kmp-64kb-debuginfo
dtb-amlogic
dtb-aarch64
kernel-kvmsmall-vdso-debuginfo
kernel-zfcpdump-debugsource
kernel-zfcpdump
kernel-kvmsmall
kernel-obs-qa
kernel-default-devel-debuginfo
kselftests-kmp-default
kernel-default-optional-debuginfo
kernel-default-devel
kselftests-kmp-default-debuginfo
kernel-default-optional
kernel-kvmsmall-devel
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-debuginfo
kernel-debug-vdso-debuginfo
dtb-amd
kernel-debug-vdso
kernel-default-vdso-debuginfo
kernel-64kb
kselftests-kmp-64kb
kernel-64kb-extra
dtb-marvell
dtb-apm
ocfs2-kmp-64kb
dtb-exynos
gfs2-kmp-64kb-debuginfo
dtb-broadcom
dtb-rockchip
dtb-qcom
dtb-hisilicon
dtb-amazon
dtb-renesas
reiserfs-kmp-64kb
dtb-altera
kernel-64kb-optional
dtb-nvidia
reiserfs-kmp-64kb-debuginfo
dtb-apple
dtb-xilinx
dtb-sprd
dlm-kmp-64kb
gfs2-kmp-64kb
dtb-lg
kernel-64kb-devel
dtb-cavium
dlm-kmp-64kb-debuginfo
cluster-md-kmp-64kb
kernel-default-base-rebuild
kernel-default-base

How to mitigate CVE-2023-53461

Install update from vendor's repository.

Linux kernel - update to 6.1.39
kernel-livepatch-6_4_0-150600_10_55-rt - update to 1-150600.1.3.1
kernel-livepatch-6_4_0-150600_10_55-rt-debuginfo - update to 1-150600.1.3.1
kernel-livepatch-SLE15-SP6-RT_Update_16-debugsource - update to 1-150600.1.3.1
kernel-livepatch-6_4_0-150600_23_73-default - update to 1-150600.13.3.1
kernel-livepatch-SLE15-SP6_Update_16-debugsource - update to 1-150600.13.3.1
kernel-livepatch-6_4_0-150600_23_73-default-debuginfo - update to 1-150600.13.3.1
kernel-livepatch-SLE15-SP7-RT_Update_6-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_22-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_22-rt - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_53_22-default - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_22-default-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_6-debugsource - update to 1-150700.15.3.1
kernel-source-azure - addressed in versions 6.4.0-150600.8.52.1, 6.4.0-150700.20.18.1
cluster-md-kmp-azure-debuginfo - update to 6.4.0-150600.8.52.1
kernel-azure-extra - update to 6.4.0-150600.8.52.1
dlm-kmp-azure-debuginfo - update to 6.4.0-150600.8.52.1
kernel-azure-optional - update to 6.4.0-150600.8.52.1
kernel-azure-debugsource - addressed in versions 6.4.0-150600.8.52.1, 6.4.0-150700.20.18.1
kernel-azure-optional-debuginfo - update to 6.4.0-150600.8.52.1
kselftests-kmp-azure - update to 6.4.0-150600.8.52.1
kernel-azure-extra-debuginfo - update to 6.4.0-150600.8.52.1
gfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.52.1
ocfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.52.1
kernel-devel-azure - addressed in versions 6.4.0-150600.8.52.1, 6.4.0-150700.20.18.1
cluster-md-kmp-azure - update to 6.4.0-150600.8.52.1
dlm-kmp-azure - update to 6.4.0-150600.8.52.1
kernel-azure-devel - addressed in versions 6.4.0-150600.8.52.1, 6.4.0-150700.20.18.1
kernel-azure-debuginfo - addressed in versions 6.4.0-150600.8.52.1, 6.4.0-150700.20.18.1
reiserfs-kmp-azure-debuginfo - update to 6.4.0-150600.8.52.1
ocfs2-kmp-azure - update to 6.4.0-150600.8.52.1
kselftests-kmp-azure-debuginfo - update to 6.4.0-150600.8.52.1
kernel-syms-azure - addressed in versions 6.4.0-150600.8.52.1, 6.4.0-150700.20.18.1
gfs2-kmp-azure - update to 6.4.0-150600.8.52.1
kernel-azure-devel-debuginfo - addressed in versions 6.4.0-150600.8.52.1, 6.4.0-150700.20.18.1
reiserfs-kmp-azure - update to 6.4.0-150600.8.52.1
kernel-azure - addressed in versions 6.4.0-150600.8.52.1, 6.4.0-150700.20.18.1
kernel-azure-vdso-debuginfo - update to 6.4.0-150600.8.52.1
kernel-azure-vdso - update to 6.4.0-150600.8.52.1
gfs2-kmp-rt-debuginfo - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
kernel-rt-optional-debuginfo - update to 6.4.0-150600.10.55.1
kernel-rt_debug - update to 6.4.0-150600.10.55.1
kernel-rt - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
kernel-source-rt - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
kernel-devel-rt - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
kernel-rt_debug-devel-debuginfo - update to 6.4.0-150600.10.55.1
kernel-rt-devel-debuginfo - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
kernel-rt_debug-debugsource - update to 6.4.0-150600.10.55.1
kernel-rt-devel - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
kselftests-kmp-rt - update to 6.4.0-150600.10.55.1
dlm-kmp-rt - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
cluster-md-kmp-rt - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
ocfs2-kmp-rt - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
kernel-rt-debugsource - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
ocfs2-kmp-rt-debuginfo - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
kernel-syms-rt - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
cluster-md-kmp-rt-debuginfo - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
gfs2-kmp-rt - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
reiserfs-kmp-rt - update to 6.4.0-150600.10.55.1
kernel-rt_debug-devel - update to 6.4.0-150600.10.55.1
dlm-kmp-rt-debuginfo - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
kernel-rt_debug-debuginfo - update to 6.4.0-150600.10.55.1
kernel-rt-debuginfo - addressed in versions 6.4.0-150600.10.55.1, 6.4.0-150700.7.22.1
kernel-rt-vdso-debuginfo - update to 6.4.0-150600.10.55.1
kernel-rt-optional - update to 6.4.0-150600.10.55.1
reiserfs-kmp-rt-debuginfo - update to 6.4.0-150600.10.55.1
kernel-rt-livepatch-devel - update to 6.4.0-150600.10.55.1
kernel-rt-extra-debuginfo - update to 6.4.0-150600.10.55.1
kernel-rt_debug-vdso-debuginfo - update to 6.4.0-150600.10.55.1
kernel-rt_debug-vdso - update to 6.4.0-150600.10.55.1
kselftests-kmp-rt-debuginfo - update to 6.4.0-150600.10.55.1
kernel-rt-vdso - update to 6.4.0-150600.10.55.1
kernel-rt-extra - update to 6.4.0-150600.10.55.1
kernel-macros - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-docs-html - update to 6.4.0-150600.23.73.1
gfs2-kmp-default - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-docs - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-default-livepatch-devel - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-default-livepatch - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-default-extra - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-default-extra-debuginfo - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.73.1
kernel-source-vanilla - update to 6.4.0-150600.23.73.1
kernel-devel - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-debug - update to 6.4.0-150600.23.73.1
kernel-debug-debuginfo - update to 6.4.0-150600.23.73.1
kernel-debug-devel - update to 6.4.0-150600.23.73.1
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.73.1
kernel-debug-debugsource - update to 6.4.0-150600.23.73.1
kernel-obs-build-debugsource - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
gfs2-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
dlm-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
dlm-kmp-default - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
ocfs2-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
ocfs2-kmp-default - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
cluster-md-kmp-default - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
cluster-md-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
reiserfs-kmp-default-debuginfo - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
reiserfs-kmp-default - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-default-debugsource - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-default-debuginfo - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-default - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-source - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-obs-build - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-syms - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-default-vdso - update to 6.4.0-150600.23.73.1
kernel-zfcpdump-debuginfo - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
dtb-socionext - update to 6.4.0-150600.23.73.1
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.73.1
dtb-allwinner - update to 6.4.0-150600.23.73.1
kernel-64kb-debugsource - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.73.1
dtb-mediatek - update to 6.4.0-150600.23.73.1
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.73.1
dtb-freescale - update to 6.4.0-150600.23.73.1
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.73.1
kernel-64kb-debuginfo - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-64kb-devel-debuginfo - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
dtb-arm - update to 6.4.0-150600.23.73.1
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.73.1
dtb-amlogic - update to 6.4.0-150600.23.73.1
dtb-aarch64 - update to 6.4.0-150600.23.73.1
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.73.1
kernel-zfcpdump-debugsource - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-zfcpdump - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kernel-kvmsmall - update to 6.4.0-150600.23.73.1
kernel-obs-qa - update to 6.4.0-150600.23.73.1
kernel-default-devel-debuginfo - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kselftests-kmp-default - update to 6.4.0-150600.23.73.1
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.73.1
kernel-default-devel - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.73.1
kernel-default-optional - update to 6.4.0-150600.23.73.1
kernel-kvmsmall-devel - update to 6.4.0-150600.23.73.1
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.73.1
kernel-kvmsmall-debugsource - update to 6.4.0-150600.23.73.1
kernel-kvmsmall-debuginfo - update to 6.4.0-150600.23.73.1
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.73.1
dtb-amd - update to 6.4.0-150600.23.73.1
kernel-debug-vdso - update to 6.4.0-150600.23.73.1
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.73.1
kernel-64kb - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
kselftests-kmp-64kb - update to 6.4.0-150600.23.73.1
kernel-64kb-extra - update to 6.4.0-150600.23.73.1
dtb-marvell - update to 6.4.0-150600.23.73.1
dtb-apm - update to 6.4.0-150600.23.73.1
ocfs2-kmp-64kb - update to 6.4.0-150600.23.73.1
dtb-exynos - update to 6.4.0-150600.23.73.1
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.73.1
dtb-broadcom - update to 6.4.0-150600.23.73.1
dtb-rockchip - update to 6.4.0-150600.23.73.1
dtb-qcom - update to 6.4.0-150600.23.73.1
dtb-hisilicon - update to 6.4.0-150600.23.73.1
dtb-amazon - update to 6.4.0-150600.23.73.1
dtb-renesas - update to 6.4.0-150600.23.73.1
reiserfs-kmp-64kb - update to 6.4.0-150600.23.73.1
dtb-altera - update to 6.4.0-150600.23.73.1
kernel-64kb-optional - update to 6.4.0-150600.23.73.1
dtb-nvidia - update to 6.4.0-150600.23.73.1
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.73.1
dtb-apple - update to 6.4.0-150600.23.73.1
dtb-xilinx - update to 6.4.0-150600.23.73.1
dtb-sprd - update to 6.4.0-150600.23.73.1
dlm-kmp-64kb - update to 6.4.0-150600.23.73.1
gfs2-kmp-64kb - update to 6.4.0-150600.23.73.1
dtb-lg - update to 6.4.0-150600.23.73.1
kernel-64kb-devel - addressed in versions 6.4.0-150600.23.73.1, 6.4.0-150700.53.22.1
dtb-cavium - update to 6.4.0-150600.23.73.1
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.73.1
cluster-md-kmp-64kb - update to 6.4.0-150600.23.73.1
kernel-default-base-rebuild - update to 6.4.0-150600.23.73.1.150600.12.32.1
kernel-default-base - addressed in versions 6.4.0-150600.23.73.1.150600.12.32.1, 6.4.0-150700.53.22.1.150700.17.15.1

External References

Related Security Bulletins