NULL pointer dereference in Linux kernel - CVE-2025-38018

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Main Vulnerability Database Vulnerabilities #VU111561

NULL pointer dereference in Linux kernel - CVE-2025-38018

Published: June 20, 2025


Vulnerability identifier: #VU111561
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-2025-38018
CWE-ID: CWE-476
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 NULL pointer dereference within the tls_strp_read_copy() function in net/tls/tls_strp.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
Development Tools Module
Confidential Computing Module
Basesystem Module
SUSE Linux Enterprise Live Patching
Legacy Module
openSUSE Leap
Ubuntu
Anolis OS
openEuler
kernel-livepatch-6_4_0-150600_23_60-default
kernel-livepatch-SLE15-SP6_Update_13-debugsource
kernel-livepatch-6_4_0-150600_23_60-default-debuginfo
kernel-coco_debug-devel
kernel-coco
kernel-coco_debug
kernel-coco-devel
kernel-coco_debug-debuginfo
kernel-coco_debug-devel-debuginfo
kernel-coco-debuginfo
kernel-coco-debugsource
kernel-source-coco
kernel-devel-coco
kernel-coco_debug-debugsource
kernel-syms-coco
kernel-coco-vdso-debuginfo
reiserfs-kmp-coco
reiserfs-kmp-coco-debuginfo
kernel-obs-qa
dtb-allwinner
dtb-socionext
dtb-hisilicon
kernel-obs-build-debugsource
dtb-amazon
dtb-qcom
dtb-xilinx
dtb-rockchip
dtb-exynos
dtb-cavium
dtb-sprd
dtb-amlogic
dtb-aarch64
dtb-amd
dtb-arm
dtb-apple
dtb-lg
dtb-altera
kernel-docs
dtb-mediatek
dtb-renesas
dtb-marvell
dtb-freescale
dtb-broadcom
dtb-apm
dtb-nvidia
kernel-docs-html
kernel-obs-build
cluster-md-kmp-64kb
cluster-md-kmp-64kb-debuginfo
dlm-kmp-64kb-debuginfo
kernel-64kb
kernel-64kb-optional
kernel-64kb-devel-debuginfo
kernel-64kb-extra
kernel-macros
kernel-64kb-extra-debuginfo
reiserfs-kmp-64kb-debuginfo
reiserfs-kmp-64kb
kernel-64kb-devel
kernel-64kb-optional-debuginfo
kernel-64kb-debuginfo
ocfs2-kmp-64kb
gfs2-kmp-64kb
kselftests-kmp-64kb
ocfs2-kmp-64kb-debuginfo
gfs2-kmp-64kb-debuginfo
kernel-debug
kernel-syms
kselftests-kmp-64kb-debuginfo
kernel-source
kernel-kvmsmall-devel
kernel-kvmsmall-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel-debuginfo
kernel-devel
kernel-source-vanilla
kernel-64kb-debugsource
kernel-debug-devel-debuginfo
kernel-debug-devel
kernel-debug-debuginfo
kernel-debug-vdso-debuginfo
kernel-kvmsmall-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-debug-vdso
kernel-debug-debugsource
dlm-kmp-64kb
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-zfcpdump
kernel-kvmsmall
kernel-default-debugsource
kernel-default-vdso
kernel-default-vdso-debuginfo
kernel-default-livepatch-devel
kernel-default
kernel-default-extra-debuginfo
kernel-default-devel-debuginfo
kernel-default-extra
kernel-default-livepatch
ocfs2-kmp-default-debuginfo
reiserfs-kmp-default-debuginfo
kselftests-kmp-default
gfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
dlm-kmp-default-debuginfo
kernel-default-optional-debuginfo
reiserfs-kmp-default
kselftests-kmp-default-debuginfo
gfs2-kmp-default
ocfs2-kmp-default
kernel-default-debuginfo
cluster-md-kmp-default
kernel-default-optional
kernel-default-devel
dlm-kmp-default
kernel-default-base
kernel-default-base-rebuild
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python3-perf
python3-perf-debuginfo
kernel-tools
kernel-headers
kernel-debugsource
kernel-debuginfo
bpftool
bpftool-debuginfo
kernel
kernel-extra-modules
kernel-64k-devel
kernel-64k-debug-devel
kernel-64k-debug
kernel-64k
kernel-tools-libs-devel
kernel-tools-libs
linux (Ubuntu package)
linux-aws-fips (Ubuntu package)
linux-lowlatency (Ubuntu package)
linux-hwe-6.8 (Ubuntu package)
linux-xilinx (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-ibm (Ubuntu package)
linux-nvidia-lowlatency (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-gcp-fips (Ubuntu package)
linux-gcp-6.8 (Ubuntu package)
linux-azure-6.8 (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-realtime-6.8 (Ubuntu package)
linux-hwe-6.14 (Ubuntu package)

How to mitigate CVE-2025-38018

Install update from vendor's repository.

kernel-livepatch-6_4_0-150600_23_60-default - update to 1-150600.13.6.4
kernel-livepatch-SLE15-SP6_Update_13-debugsource - update to 1-150600.13.6.4
kernel-livepatch-6_4_0-150600_23_60-default-debuginfo - update to 1-150600.13.6.4
kernel-coco_debug-devel - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-devel - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug-devel-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-debugsource - update to 6.4.0-15061.28.coco15sp6.1
kernel-source-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-devel-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug-debugsource - update to 6.4.0-15061.28.coco15sp6.1
kernel-syms-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-vdso-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
reiserfs-kmp-coco - update to 6.4.0-15061.28.coco15sp6.1
reiserfs-kmp-coco-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-obs-qa - update to 6.4.0-150600.23.60.2
dtb-allwinner - update to 6.4.0-150600.23.60.3
dtb-socionext - update to 6.4.0-150600.23.60.3
dtb-hisilicon - update to 6.4.0-150600.23.60.3
kernel-obs-build-debugsource - update to 6.4.0-150600.23.60.3
dtb-amazon - update to 6.4.0-150600.23.60.3
dtb-qcom - update to 6.4.0-150600.23.60.3
dtb-xilinx - update to 6.4.0-150600.23.60.3
dtb-rockchip - update to 6.4.0-150600.23.60.3
dtb-exynos - update to 6.4.0-150600.23.60.3
dtb-cavium - update to 6.4.0-150600.23.60.3
dtb-sprd - update to 6.4.0-150600.23.60.3
dtb-amlogic - update to 6.4.0-150600.23.60.3
dtb-aarch64 - update to 6.4.0-150600.23.60.3
dtb-amd - update to 6.4.0-150600.23.60.3
dtb-arm - update to 6.4.0-150600.23.60.3
dtb-apple - update to 6.4.0-150600.23.60.3
dtb-lg - update to 6.4.0-150600.23.60.3
dtb-altera - update to 6.4.0-150600.23.60.3
kernel-docs - update to 6.4.0-150600.23.60.3
dtb-mediatek - update to 6.4.0-150600.23.60.3
dtb-renesas - update to 6.4.0-150600.23.60.3
dtb-marvell - update to 6.4.0-150600.23.60.3
dtb-freescale - update to 6.4.0-150600.23.60.3
dtb-broadcom - update to 6.4.0-150600.23.60.3
dtb-apm - update to 6.4.0-150600.23.60.3
dtb-nvidia - update to 6.4.0-150600.23.60.3
kernel-docs-html - update to 6.4.0-150600.23.60.3
kernel-obs-build - update to 6.4.0-150600.23.60.3
cluster-md-kmp-64kb - update to 6.4.0-150600.23.60.4
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
dlm-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb - update to 6.4.0-150600.23.60.4
kernel-64kb-optional - update to 6.4.0-150600.23.60.4
kernel-64kb-devel-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-extra - update to 6.4.0-150600.23.60.4
kernel-macros - update to 6.4.0-150600.23.60.4
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.60.4
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
reiserfs-kmp-64kb - update to 6.4.0-150600.23.60.4
kernel-64kb-devel - update to 6.4.0-150600.23.60.4
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-debuginfo - update to 6.4.0-150600.23.60.4
ocfs2-kmp-64kb - update to 6.4.0-150600.23.60.4
gfs2-kmp-64kb - update to 6.4.0-150600.23.60.4
kselftests-kmp-64kb - update to 6.4.0-150600.23.60.4
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug - update to 6.4.0-150600.23.60.4
kernel-syms - update to 6.4.0-150600.23.60.4
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-source - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-devel - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-debuginfo - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-debugsource - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-devel-debuginfo - update to 6.4.0-150600.23.60.4
kernel-devel - update to 6.4.0-150600.23.60.4
kernel-source-vanilla - update to 6.4.0-150600.23.60.4
kernel-64kb-debugsource - update to 6.4.0-150600.23.60.4
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug-devel - update to 6.4.0-150600.23.60.4
kernel-debug-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug-vdso-debuginfo - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-vdso - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug-vdso - update to 6.4.0-150600.23.60.4
kernel-debug-debugsource - update to 6.4.0-150600.23.60.4
dlm-kmp-64kb - update to 6.4.0-150600.23.60.4
kernel-zfcpdump-debugsource - update to 6.4.0-150600.23.60.4
kernel-zfcpdump-debuginfo - update to 6.4.0-150600.23.60.4
kernel-zfcpdump - update to 6.4.0-150600.23.60.4
kernel-kvmsmall - update to 6.4.0-150600.23.60.4
kernel-default-debugsource - update to 6.4.0-150600.23.60.5
kernel-default-vdso - update to 6.4.0-150600.23.60.5
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-livepatch-devel - update to 6.4.0-150600.23.60.5
kernel-default - update to 6.4.0-150600.23.60.5
kernel-default-extra-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-devel-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-extra - update to 6.4.0-150600.23.60.5
kernel-default-livepatch - update to 6.4.0-150600.23.60.5
ocfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
reiserfs-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
kselftests-kmp-default - update to 6.4.0-150600.23.60.5
gfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
cluster-md-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
dlm-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.60.5
reiserfs-kmp-default - update to 6.4.0-150600.23.60.5
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
gfs2-kmp-default - update to 6.4.0-150600.23.60.5
ocfs2-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-debuginfo - update to 6.4.0-150600.23.60.5
cluster-md-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-optional - update to 6.4.0-150600.23.60.5
kernel-default-devel - update to 6.4.0-150600.23.60.5
dlm-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-base - update to 6.4.0-150600.23.60.5.150600.12.26.4
kernel-default-base-rebuild - update to 6.4.0-150600.23.60.5.150600.12.26.4
kernel-tools-debuginfo - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-tools-devel - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
perf - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
perf-debuginfo - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
python3-perf - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
python3-perf-debuginfo - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-tools - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-source - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-headers - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-devel - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-debugsource - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-debuginfo - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
bpftool - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
bpftool-debuginfo - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-extra-modules - update to 6.6.0-110.0.0.116
kernel-debug - update to 6.6.102-5
kernel-64k-devel - update to 6.6.102-5
kernel-64k-debug-devel - update to 6.6.102-5
kernel-64k-debug - update to 6.6.102-5
kernel-64k - update to 6.6.102-5
python3-perf - update to 6.6.102-5
perf - update to 6.6.102-5
kernel-tools-libs-devel - update to 6.6.102-5
kernel-tools-libs - update to 6.6.102-5
kernel-tools - update to 6.6.102-5
kernel-headers - update to 6.6.102-5
kernel-devel - update to 6.6.102-5
kernel - update to 6.6.102-5
bpftool - update to 6.6.102-5
kernel-debug-devel - update to 6.6.102-5
linux (Ubuntu package) - addressed in versions 6.8.0-100.100, 6.8.0-1047.51, 6.14.0-28.28, 6.14.0-1010.10~24.04.1, 6.14.0-1011.11, 6.14.0-1011.11~24.04.1, 6.14.0-1012.12~24.04.1, 6.14.0-1014.15, 6.14.0-1014.15~24.04.1
linux-aws-fips (Ubuntu package) - addressed in versions 6.8.0-100.100+fips1, 6.8.0-1046.49+fips1
linux-lowlatency (Ubuntu package) - update to 6.8.0-100.100.1
linux-hwe-6.8 (Ubuntu package) - addressed in versions 6.8.0-100.100.1~22.04.1, 6.8.0-100.100~22.04.1
linux-xilinx (Ubuntu package) - addressed in versions 6.8.0.1023.24, 6.8.0-1023.24
linux-aws (Ubuntu package) - addressed in versions 6.8.0-1030.33, 6.8.0-1043.44, 6.8.0-1043.44~22.04.1, 6.8.0-1046.49~22.04.1
linux-gcp (Ubuntu package) - addressed in versions 6.8.0-1043.48, 6.8.0-1047.50~22.04.2
linux-ibm (Ubuntu package) - addressed in versions 6.8.0-1044.44, 6.8.0-1044.44~22.04.1
linux-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1046.49.1
linux-azure (Ubuntu package) - update to 6.8.0-1046.52
linux-azure-fips (Ubuntu package) - update to 6.8.0-1046.52+fips1
linux-gcp-fips (Ubuntu package) - update to 6.8.0-1047.50+fips1
linux-gcp-6.8 (Ubuntu package) - update to 6.8.0-1047.50~22.04.2
linux-azure-6.8 (Ubuntu package) - update to 6.8.0-1051.57~22.04.1
linux-raspi-realtime (Ubuntu package) - addressed in versions 6.8.0-2037.38, 6.8.1-1041.42
linux-realtime-6.8 (Ubuntu package) - update to 6.8.1-1041.42~22.04.1
linux-hwe-6.14 (Ubuntu package) - addressed in versions 6.14.0-28.28~24.04.1, 6.14.0-1010.10

External References

Related Security Bulletins