Buffer overflow in Linux kernel - CVE-2023-53513

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Main Vulnerability Database Vulnerabilities #VU116305

Buffer overflow in Linux kernel - CVE-2023-53513

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


Vulnerability identifier: #VU116305
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-2023-53513
CWE-ID: CWE-119
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 memory corruption within the nbd_set_size() and nbd_add_socket() functions in drivers/block/nbd.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Manager Server 4.3
SUSE Manager Retail Branch Server 4.3
SUSE Manager Proxy 4.3
SUSE Linux Enterprise Server 15 SP4
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 High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Enterprise Micro
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Anolis OS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
SUSE Linux Enterprise Live Patching
openSUSE Leap
IBM Qradar SIEM
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel-livepatch-5_14_21-150400_24_179-default
kernel-livepatch-5_14_21-150400_24_179-default-debuginfo
kernel-livepatch-SLE15-SP4_Update_45-debugsource
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-abi-stablelists
bpftool
kernel
kernel-core
kernel-cross-headers
kernel-debug
kernel-debug-core
kernel-debug-devel
kernel-debug-modules
kernel-debug-modules-extra
kernel-devel
kernel-headers
kernel-modules
kernel-modules-extra
kernel-tools
kernel-tools-libs
kernel-tools-libs-devel
perf
python3-perf
kernel-doc
kernel-rt-debuginfo
kernel-rt
kernel-rt-debugsource
kernel-source-rt
dtb-amlogic
dtb-apple
kselftests-kmp-64kb
dtb-amd
dlm-kmp-64kb-debuginfo
dtb-amazon
dtb-nvidia
dtb-mediatek
dtb-qcom
dtb-renesas
kselftests-kmp-64kb-debuginfo
dtb-altera
kernel-64kb-extra
gfs2-kmp-64kb
cluster-md-kmp-64kb
kernel-64kb-optional
dtb-xilinx
cluster-md-kmp-64kb-debuginfo
reiserfs-kmp-64kb-debuginfo
dtb-allwinner
dtb-marvell
kernel-64kb-devel-debuginfo
kernel-64kb-debugsource
kernel-64kb-devel
dlm-kmp-64kb
dtb-rockchip
kernel-64kb
kernel-default-debuginfo
kernel-syms
dtb-exynos
reiserfs-kmp-default-debuginfo
kernel-default-livepatch
gfs2-kmp-default
dlm-kmp-default-debuginfo
kernel-default-extra-debuginfo
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-optional-debuginfo
kernel-default-extra
gfs2-kmp-default-debuginfo
reiserfs-kmp-default
kernel-default-debugsource
cluster-md-kmp-default
kselftests-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kselftests-kmp-default
ocfs2-kmp-default
kernel-default-devel
kernel-kvmsmall-devel
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel-debuginfo
kernel-kvmsmall-debuginfo
kernel-macros
kernel-source-vanilla
kernel-docs-html
kernel-source
dtb-socionext
kernel-docs
dtb-arm
dtb-apm
dtb-lg
dtb-freescale
ocfs2-kmp-64kb-debuginfo
dtb-broadcom
dtb-cavium
gfs2-kmp-64kb-debuginfo
dtb-hisilicon
kernel-64kb-extra-debuginfo
kernel-64kb-optional-debuginfo
kernel-default-optional
kernel-64kb-debuginfo
ocfs2-kmp-64kb
kernel-default-devel-debuginfo
kernel-obs-qa
ocfs2-kmp-default-debuginfo
dlm-kmp-default
kernel-default
kernel-default-livepatch-devel
kernel-kvmsmall
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
dtb-aarch64
dtb-sprd
reiserfs-kmp-64kb
kernel-default-base-rebuild
kernel-default-base

How to mitigate CVE-2023-53513

Install update from vendor's repository.

Linux kernel - update to 6.3.4
IBM Qradar SIEM - update to 7.5.0 Update Pack 14 IF03
kernel-livepatch-5_14_21-150400_24_179-default - update to 1-150400.9.3.1
kernel-livepatch-5_14_21-150400_24_179-default-debuginfo - update to 1-150400.9.3.1
kernel-livepatch-SLE15-SP4_Update_45-debugsource - update to 1-150400.9.3.1
kernel (Red Hat package) - addressed in versions 4.18.0-193.187.1.el8_2, 4.18.0-305.183.1.el8_4, 4.18.0-372.175.1.el8_6, 4.18.0-477.124.1.el8_8, 4.18.0-553.87.1.el8_10, 5.14.0-70.158.1.el9_0, 5.14.0-284.148.1.el9_2
kernel-rt (Red Hat package) - addressed in versions 4.18.0-553.87.1.rt7.428.el8_10, 5.14.0-70.158.1.rt21.230.el9_0, 5.14.0-284.148.1.rt14.433.el9_2
kernel-abi-stablelists - update to 4.18.0-553.87.1.0.1
bpftool - update to 4.18.0-553.87.1.0.1
kernel - update to 4.18.0-553.87.1.0.1
kernel-core - update to 4.18.0-553.87.1.0.1
kernel-cross-headers - update to 4.18.0-553.87.1.0.1
kernel-debug - update to 4.18.0-553.87.1.0.1
kernel-debug-core - update to 4.18.0-553.87.1.0.1
kernel-debug-devel - update to 4.18.0-553.87.1.0.1
kernel-debug-modules - update to 4.18.0-553.87.1.0.1
kernel-debug-modules-extra - update to 4.18.0-553.87.1.0.1
kernel-devel - update to 4.18.0-553.87.1.0.1
kernel-headers - update to 4.18.0-553.87.1.0.1
kernel-modules - update to 4.18.0-553.87.1.0.1
kernel-modules-extra - update to 4.18.0-553.87.1.0.1
kernel-tools - update to 4.18.0-553.87.1.0.1
kernel-tools-libs - update to 4.18.0-553.87.1.0.1
kernel-tools-libs-devel - update to 4.18.0-553.87.1.0.1
perf - update to 4.18.0-553.87.1.0.1
python3-perf - update to 4.18.0-553.87.1.0.1
kernel-doc - update to 4.18.0-553.87.1.0.1
kernel-rt-debuginfo - update to 5.14.21-150400.15.133.1
kernel-rt - update to 5.14.21-150400.15.133.1
kernel-rt-debugsource - update to 5.14.21-150400.15.133.1
kernel-source-rt - update to 5.14.21-150400.15.133.1
dtb-amlogic - update to 5.14.21-150400.24.179.1
dtb-apple - update to 5.14.21-150400.24.179.1
kselftests-kmp-64kb - update to 5.14.21-150400.24.179.1
dtb-amd - update to 5.14.21-150400.24.179.1
dlm-kmp-64kb-debuginfo - update to 5.14.21-150400.24.179.1
dtb-amazon - update to 5.14.21-150400.24.179.1
dtb-nvidia - update to 5.14.21-150400.24.179.1
dtb-mediatek - update to 5.14.21-150400.24.179.1
dtb-qcom - update to 5.14.21-150400.24.179.1
dtb-renesas - update to 5.14.21-150400.24.179.1
kselftests-kmp-64kb-debuginfo - update to 5.14.21-150400.24.179.1
dtb-altera - update to 5.14.21-150400.24.179.1
kernel-64kb-extra - update to 5.14.21-150400.24.179.1
gfs2-kmp-64kb - update to 5.14.21-150400.24.179.1
cluster-md-kmp-64kb - update to 5.14.21-150400.24.179.1
kernel-64kb-optional - update to 5.14.21-150400.24.179.1
dtb-xilinx - update to 5.14.21-150400.24.179.1
cluster-md-kmp-64kb-debuginfo - update to 5.14.21-150400.24.179.1
reiserfs-kmp-64kb-debuginfo - update to 5.14.21-150400.24.179.1
dtb-allwinner - update to 5.14.21-150400.24.179.1
dtb-marvell - update to 5.14.21-150400.24.179.1
kernel-64kb-devel-debuginfo - update to 5.14.21-150400.24.179.1
kernel-64kb-debugsource - update to 5.14.21-150400.24.179.1
kernel-64kb-devel - update to 5.14.21-150400.24.179.1
dlm-kmp-64kb - update to 5.14.21-150400.24.179.1
dtb-rockchip - update to 5.14.21-150400.24.179.1
kernel-64kb - update to 5.14.21-150400.24.179.1
kernel-default-debuginfo - update to 5.14.21-150400.24.179.1
kernel-syms - update to 5.14.21-150400.24.179.1
dtb-exynos - update to 5.14.21-150400.24.179.1
reiserfs-kmp-default-debuginfo - update to 5.14.21-150400.24.179.1
kernel-default-livepatch - update to 5.14.21-150400.24.179.1
gfs2-kmp-default - update to 5.14.21-150400.24.179.1
dlm-kmp-default-debuginfo - update to 5.14.21-150400.24.179.1
kernel-default-extra-debuginfo - update to 5.14.21-150400.24.179.1
kernel-obs-build - update to 5.14.21-150400.24.179.1
kernel-obs-build-debugsource - update to 5.14.21-150400.24.179.1
kernel-default-optional-debuginfo - update to 5.14.21-150400.24.179.1
kernel-default-extra - update to 5.14.21-150400.24.179.1
gfs2-kmp-default-debuginfo - update to 5.14.21-150400.24.179.1
reiserfs-kmp-default - update to 5.14.21-150400.24.179.1
kernel-default-debugsource - update to 5.14.21-150400.24.179.1
cluster-md-kmp-default - update to 5.14.21-150400.24.179.1
kselftests-kmp-default-debuginfo - update to 5.14.21-150400.24.179.1
cluster-md-kmp-default-debuginfo - update to 5.14.21-150400.24.179.1
kselftests-kmp-default - update to 5.14.21-150400.24.179.1
ocfs2-kmp-default - update to 5.14.21-150400.24.179.1
kernel-default-devel - update to 5.14.21-150400.24.179.1
kernel-kvmsmall-devel - update to 5.14.21-150400.24.179.1
kernel-kvmsmall-debugsource - update to 5.14.21-150400.24.179.1
kernel-kvmsmall-devel-debuginfo - update to 5.14.21-150400.24.179.1
kernel-kvmsmall-debuginfo - update to 5.14.21-150400.24.179.1
kernel-macros - update to 5.14.21-150400.24.179.1
kernel-source-vanilla - update to 5.14.21-150400.24.179.1
kernel-devel - update to 5.14.21-150400.24.179.1
kernel-docs-html - update to 5.14.21-150400.24.179.1
kernel-source - update to 5.14.21-150400.24.179.1
dtb-socionext - update to 5.14.21-150400.24.179.1
kernel-docs - update to 5.14.21-150400.24.179.1
dtb-arm - update to 5.14.21-150400.24.179.1
dtb-apm - update to 5.14.21-150400.24.179.1
dtb-lg - update to 5.14.21-150400.24.179.1
dtb-freescale - update to 5.14.21-150400.24.179.1
ocfs2-kmp-64kb-debuginfo - update to 5.14.21-150400.24.179.1
dtb-broadcom - update to 5.14.21-150400.24.179.1
dtb-cavium - update to 5.14.21-150400.24.179.1
gfs2-kmp-64kb-debuginfo - update to 5.14.21-150400.24.179.1
dtb-hisilicon - update to 5.14.21-150400.24.179.1
kernel-64kb-extra-debuginfo - update to 5.14.21-150400.24.179.1
kernel-64kb-optional-debuginfo - update to 5.14.21-150400.24.179.1
kernel-default-optional - update to 5.14.21-150400.24.179.1
kernel-64kb-debuginfo - update to 5.14.21-150400.24.179.1
ocfs2-kmp-64kb - update to 5.14.21-150400.24.179.1
kernel-default-devel-debuginfo - update to 5.14.21-150400.24.179.1
kernel-obs-qa - update to 5.14.21-150400.24.179.1
ocfs2-kmp-default-debuginfo - update to 5.14.21-150400.24.179.1
dlm-kmp-default - update to 5.14.21-150400.24.179.1
kernel-default - update to 5.14.21-150400.24.179.1
kernel-default-livepatch-devel - update to 5.14.21-150400.24.179.1
kernel-kvmsmall - update to 5.14.21-150400.24.179.1
kernel-zfcpdump - update to 5.14.21-150400.24.179.1
kernel-zfcpdump-debuginfo - update to 5.14.21-150400.24.179.1
kernel-zfcpdump-debugsource - update to 5.14.21-150400.24.179.1
dtb-aarch64 - update to 5.14.21-150400.24.179.1
dtb-sprd - update to 5.14.21-150400.24.179.1
reiserfs-kmp-64kb - update to 5.14.21-150400.24.179.1
kernel-default-base-rebuild - update to 5.14.21-150400.24.179.1.150400.24.92.1
kernel-default-base - update to 5.14.21-150400.24.179.1.150400.24.92.1

External References

Related Security Bulletins