Use-after-free in Linux kernel - CVE-2023-53432

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Main Vulnerability Database Vulnerabilities #VU115882

Use-after-free in Linux kernel - CVE-2023-53432

Published: September 19, 2025 / Updated: September 22, 2025


Vulnerability identifier: #VU115882
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-53432
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the fwnet_finish_incoming_packet() function in drivers/firewire/net.c. A local user can escalate privileges on the system.


Affected software

Linux kernel
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Workstation Extension 15
Basesystem Module
Development Tools Module
SUSE Real Time Module
Legacy Module
SUSE Linux Enterprise Live Patching
Public Cloud Module
openSUSE Leap
openEuler
kernel-livepatch-SLE15-SP6-RT_Update_16-debugsource
kernel-livepatch-6_4_0-150600_10_55-rt-debuginfo
kernel-livepatch-6_4_0-150600_10_55-rt
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-debuginfo
kernel-livepatch-6_4_0-150700_53_22-default
kernel-livepatch-SLE15-SP7_Update_6-debugsource
bpftool
python3-perf-debuginfo
python2-perf-debuginfo
kernel
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python2-perf
python3-perf
kernel-source-azure
kselftests-kmp-azure-debuginfo
kernel-devel-azure
ocfs2-kmp-azure-debuginfo
gfs2-kmp-azure-debuginfo
kernel-azure-extra-debuginfo
kselftests-kmp-azure
kernel-azure-optional-debuginfo
kernel-azure-debugsource
kernel-azure-optional
dlm-kmp-azure-debuginfo
kernel-azure-extra
cluster-md-kmp-azure-debuginfo
dlm-kmp-azure
cluster-md-kmp-azure
kernel-azure-devel
kernel-azure-debuginfo
reiserfs-kmp-azure-debuginfo
ocfs2-kmp-azure
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
cluster-md-kmp-default
reiserfs-kmp-default
kernel-default-livepatch-devel
kernel-default-livepatch
reiserfs-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kernel-kvmsmall-vdso
kernel-source-vanilla
kernel-debug
kernel-debug-debuginfo
kernel-debug-devel
kernel-debug-devel-debuginfo
kernel-debug-debugsource
ocfs2-kmp-default
kernel-default-extra
kernel-default-extra-debuginfo
gfs2-kmp-default
gfs2-kmp-default-debuginfo
dlm-kmp-default-debuginfo
dlm-kmp-default
ocfs2-kmp-default-debuginfo
kernel-default-debugsource
kernel-default-debuginfo
kernel-default
kernel-obs-build
kernel-syms
kernel-obs-build-debugsource
kernel-docs
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-2023-53432

Install update from vendor's repository.

Linux kernel - update to 6.4.12
kernel-livepatch-SLE15-SP6-RT_Update_16-debugsource - 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-6_4_0-150600_10_55-rt - 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-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_22-default - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_6-debugsource - update to 1-150700.15.3.1
bpftool - update to 4.19.90-2510.1.0.0346
python3-perf-debuginfo - update to 4.19.90-2510.1.0.0346
python2-perf-debuginfo - update to 4.19.90-2510.1.0.0346
kernel - update to 4.19.90-2510.1.0.0346
bpftool-debuginfo - update to 4.19.90-2510.1.0.0346
kernel-debuginfo - update to 4.19.90-2510.1.0.0346
kernel-debugsource - update to 4.19.90-2510.1.0.0346
kernel-devel - update to 4.19.90-2510.1.0.0346
kernel-source - update to 4.19.90-2510.1.0.0346
kernel-tools - update to 4.19.90-2510.1.0.0346
kernel-tools-debuginfo - update to 4.19.90-2510.1.0.0346
kernel-tools-devel - update to 4.19.90-2510.1.0.0346
perf - update to 4.19.90-2510.1.0.0346
perf-debuginfo - update to 4.19.90-2510.1.0.0346
python2-perf - update to 4.19.90-2510.1.0.0346
python3-perf - update to 4.19.90-2510.1.0.0346
kernel-source-azure - addressed in versions 6.4.0-150600.8.52.1, 6.4.0-150700.20.18.1
kselftests-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
ocfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.52.1
gfs2-kmp-azure-debuginfo - update to 6.4.0-150600.8.52.1
kernel-azure-extra-debuginfo - update to 6.4.0-150600.8.52.1
kselftests-kmp-azure - update to 6.4.0-150600.8.52.1
kernel-azure-optional-debuginfo - 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 - update to 6.4.0-150600.8.52.1
dlm-kmp-azure-debuginfo - update to 6.4.0-150600.8.52.1
kernel-azure-extra - update to 6.4.0-150600.8.52.1
cluster-md-kmp-azure-debuginfo - update to 6.4.0-150600.8.52.1
dlm-kmp-azure - update to 6.4.0-150600.8.52.1
cluster-md-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
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
cluster-md-kmp-default - 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-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
reiserfs-kmp-default-debuginfo - 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
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
ocfs2-kmp-default - 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
gfs2-kmp-default - 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
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-obs-build-debugsource - 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-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