Improper locking in Linux kernel - CVE-2025-37967

Vulnerability identifier: #VU109530

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-2025-37967

CWE-ID: CWE-667

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the ucsi_set_drvdata() function in drivers/usb/typec/ucsi/ucsi.c, within the ucsi_displayport_enter(), ucsi_displayport_exit() and ucsi_displayport_vdm() functions in drivers/usb/typec/ucsi/displayport.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
Debian Linux
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Micro
SUSE Linux Micro Extras
Legacy Module
Confidential Computing Module
SUSE Linux Enterprise Live Patching
Basesystem Module
Development Tools Module
openSUSE Leap
Ubuntu
Anolis OS
openEuler
kernel-livepatch-6_4_0-150600_23_60-default-debuginfo
kernel-livepatch-SLE15-SP6_Update_13-debugsource
kernel-livepatch-6_4_0-150600_23_60-default
linux-aws-fips (Ubuntu package)
linux (Ubuntu package)
linux-xilinx-zynqmp (Ubuntu package)
linux-intel-iot-realtime (Ubuntu package)
linux-raspi (Ubuntu package)
linux-intel-iotg-5.15 (Ubuntu package)
linux-kvm (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-5.15 (Ubuntu package)
linux (Debian package)
kernel-rt
kernel-devel-rt
kernel-source-rt
kernel-rt-livepatch
kernel-rt-debuginfo
kernel-rt-debugsource
kernel-rt-devel
kernel-rt-devel-debuginfo
kernel-source-coco
kernel-coco_debug-debugsource
kernel-devel-coco
kernel-coco
kernel-coco_debug
kernel-coco_debug-devel
kernel-coco-vdso-debuginfo
kernel-syms-coco
kernel-coco-devel
reiserfs-kmp-coco
kernel-coco-debugsource
reiserfs-kmp-coco-debuginfo
kernel-coco-debuginfo
kernel-coco_debug-devel-debuginfo
kernel-coco_debug-debuginfo
kernel-obs-qa
dtb-rockchip
dtb-aarch64
dtb-amd
dtb-arm
dtb-apple
dtb-lg
dtb-altera
dtb-exynos
dtb-amlogic
dtb-sprd
dtb-cavium
dtb-xilinx
dtb-qcom
dtb-amazon
dtb-hisilicon
dtb-socionext
dtb-allwinner
dtb-nvidia
dtb-apm
dtb-broadcom
dtb-freescale
dtb-marvell
dtb-mediatek
dtb-renesas
kernel-docs
kernel-obs-build-debugsource
kernel-docs-html
kernel-obs-build
kernel-zfcpdump
ocfs2-kmp-64kb
kernel-64kb-debuginfo
dlm-kmp-64kb-debuginfo
reiserfs-kmp-64kb
kernel-64kb-extra-debuginfo
kernel-64kb-devel-debuginfo
kernel-64kb-optional
kernel-64kb
kernel-syms
kernel-kvmsmall-devel
kernel-kvmsmall-debuginfo
gfs2-kmp-64kb-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel-debuginfo
kernel-debug-vdso-debuginfo
kernel-kvmsmall-vdso
kernel-kvmsmall-vdso-debuginfo
kernel-debug-vdso
kernel-debug-debugsource
kernel-debug-debuginfo
kernel-debug-devel
kernel-debug-devel-debuginfo
kernel-debug
kernel-source-vanilla
kernel-devel
kernel-source
kernel-macros
kernel-64kb-debugsource
kernel-64kb-optional-debuginfo
reiserfs-kmp-64kb-debuginfo
kernel-64kb-extra
cluster-md-kmp-64kb-debuginfo
cluster-md-kmp-64kb
kernel-64kb-devel
kselftests-kmp-64kb-debuginfo
dlm-kmp-64kb
gfs2-kmp-64kb
kselftests-kmp-64kb
ocfs2-kmp-64kb-debuginfo
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-kvmsmall
kernel-default-extra
kernel-default-devel
kernel-default-livepatch
kernel-default-vdso
kernel-default-devel-debuginfo
kernel-default-vdso-debuginfo
ocfs2-kmp-default-debuginfo
kernel-default-extra-debuginfo
kernel-default
kernel-default-livepatch-devel
reiserfs-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
cluster-md-kmp-default
kernel-default-debuginfo
kernel-default-debugsource
ocfs2-kmp-default
gfs2-kmp-default
dlm-kmp-default
kernel-default-optional
kselftests-kmp-default-debuginfo
reiserfs-kmp-default
kernel-default-optional-debuginfo
gfs2-kmp-default-debuginfo
kselftests-kmp-default
dlm-kmp-default-debuginfo
kernel-default-base
kernel-default-base-rebuild
kernel
python3-perf-debuginfo
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel-headers
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-tools-libs
kernel-tools-libs-devel
kernel-64k
kernel-64k-debug
kernel-64k-debug-devel
kernel-64k-devel
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-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)

Install update from vendor's website.

kernel-livepatch-6_4_0-150600_23_60-default-debuginfo - 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 - update to 1-150600.13.6.4
linux-aws-fips (Ubuntu package) - addressed in versions 5.15.0.144.84, 5.15.0-144.157+fips1, 5.15.0.1087.77, 5.15.0-1087.96+fips1, 5.15.0.1088.84, 5.15.0-1088.95+fips1, 6.8.0-100.100+fips1, 6.8.0-1046.49+fips1
linux (Ubuntu package) - addressed in versions 5.15.0.144.130, 5.15.0.144.141, 5.15.0-144.157, 5.15.0-144.157~20.04.1, 5.15.0.144.157~20.04.1, 5.15.0-1030.30, 5.15.0.1030.32, 5.15.0-1041.41, 5.15.0.1041.41, 5.15.0-1041.41~20.04.1, 5.15.0.1041.41~20.04.1, 5.15.0.1070.69, 5.15.0-1070.78, 5.15.0.1080.76, 5.15.0-1080.83, 5.15.0.1080.83~20.04.1, 5.15.0-1080.83~20.04.1, 5.15.0.1082.82, 5.15.0-1082.83, 5.15.0.1083.83, 5.15.0-1083.89, 5.15.0.1085.81, 5.15.0.1085.84, 5.15.0-1085.91, 5.15.0-1085.91~20.04.3, 5.15.0.1085.91~20.04.3, 5.15.0.1087.83, 5.15.0-1087.96, 5.15.0.1087.96~20.04.1, 5.15.0-1087.96~20.04.2, 5.15.0.1088.91, 5.15.0-1088.95, 5.15.0-1088.95~20.04.1, 5.15.0.1088.95~20.04.1, 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-xilinx-zynqmp (Ubuntu package) - addressed in versions 5.15.0.1052.55, 5.15.0-1052.56
linux-intel-iot-realtime (Ubuntu package) - addressed in versions 5.15.0-1081.83, 5.15.0.1081.85, 5.15.0.1088.92, 5.15.0-1088.97
linux-raspi (Ubuntu package) - addressed in versions 5.15.0.1083.81, 5.15.0-1083.86
linux-intel-iotg-5.15 (Ubuntu package) - addressed in versions 5.15.0.1083.89~20.04.1, 5.15.0-1083.89~20.04.1
linux-kvm (Ubuntu package) - addressed in versions 5.15.0.1084.80, 5.15.0-1084.89
linux-azure-fips (Ubuntu package) - addressed in versions 5.15.0.1094.79, 5.15.0-1094.103+fips1, 6.8.0-1046.52+fips1
linux-azure (Ubuntu package) - addressed in versions 5.15.0.1094.92, 5.15.0-1094.103, 6.8.0-1046.52
linux-azure-5.15 (Ubuntu package) - addressed in versions 5.15.0.1094.103~20.04.1, 5.15.0-1094.103~20.04.1
linux (Debian package) - update to 6.1.140-1
kernel-rt - update to 6.4.0-33.1
kernel-devel-rt - update to 6.4.0-33.1
kernel-source-rt - update to 6.4.0-33.1
kernel-rt-livepatch - update to 6.4.0-33.1
kernel-rt-debuginfo - update to 6.4.0-33.1
kernel-rt-debugsource - update to 6.4.0-33.1
kernel-rt-devel - update to 6.4.0-33.1
kernel-rt-devel-debuginfo - update to 6.4.0-33.1
kernel-source-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco_debug-debugsource - update to 6.4.0-15061.28.coco15sp6.1
kernel-devel-coco - 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_debug-devel - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-vdso-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-syms-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-devel - update to 6.4.0-15061.28.coco15sp6.1
reiserfs-kmp-coco - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-debugsource - update to 6.4.0-15061.28.coco15sp6.1
reiserfs-kmp-coco-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-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_debug-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-obs-qa - update to 6.4.0-150600.23.60.2
dtb-rockchip - 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
dtb-exynos - update to 6.4.0-150600.23.60.3
dtb-amlogic - update to 6.4.0-150600.23.60.3
dtb-sprd - update to 6.4.0-150600.23.60.3
dtb-cavium - update to 6.4.0-150600.23.60.3
dtb-xilinx - update to 6.4.0-150600.23.60.3
dtb-qcom - update to 6.4.0-150600.23.60.3
dtb-amazon - update to 6.4.0-150600.23.60.3
dtb-hisilicon - update to 6.4.0-150600.23.60.3
dtb-socionext - update to 6.4.0-150600.23.60.3
dtb-allwinner - update to 6.4.0-150600.23.60.3
dtb-nvidia - update to 6.4.0-150600.23.60.3
dtb-apm - update to 6.4.0-150600.23.60.3
dtb-broadcom - update to 6.4.0-150600.23.60.3
dtb-freescale - update to 6.4.0-150600.23.60.3
dtb-marvell - 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
kernel-docs - update to 6.4.0-150600.23.60.3
kernel-obs-build-debugsource - 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
kernel-zfcpdump - update to 6.4.0-150600.23.60.4
ocfs2-kmp-64kb - update to 6.4.0-150600.23.60.4
kernel-64kb-debuginfo - update to 6.4.0-150600.23.60.4
dlm-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-extra-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-devel-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-optional - update to 6.4.0-150600.23.60.4
kernel-64kb - update to 6.4.0-150600.23.60.4
kernel-syms - 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
gfs2-kmp-64kb-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-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
kernel-debug-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug-devel - update to 6.4.0-150600.23.60.4
kernel-debug-devel-debuginfo - update to 6.4.0-150600.23.60.4
kernel-debug - update to 6.4.0-150600.23.60.4
kernel-source-vanilla - update to 6.4.0-150600.23.60.4
kernel-devel - update to 6.4.0-150600.23.60.4
kernel-source - update to 6.4.0-150600.23.60.4
kernel-macros - update to 6.4.0-150600.23.60.4
kernel-64kb-debugsource - update to 6.4.0-150600.23.60.4
kernel-64kb-optional-debuginfo - update to 6.4.0-150600.23.60.4
reiserfs-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-extra - update to 6.4.0-150600.23.60.4
cluster-md-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
cluster-md-kmp-64kb - update to 6.4.0-150600.23.60.4
kernel-64kb-devel - update to 6.4.0-150600.23.60.4
kselftests-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
dlm-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
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-kvmsmall - update to 6.4.0-150600.23.60.4
kernel-default-extra - update to 6.4.0-150600.23.60.5
kernel-default-devel - update to 6.4.0-150600.23.60.5
kernel-default-livepatch - update to 6.4.0-150600.23.60.5
kernel-default-vdso - update to 6.4.0-150600.23.60.5
kernel-default-devel-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-vdso-debuginfo - update to 6.4.0-150600.23.60.5
ocfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-extra-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default - update to 6.4.0-150600.23.60.5
kernel-default-livepatch-devel - update to 6.4.0-150600.23.60.5
reiserfs-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
cluster-md-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-debugsource - update to 6.4.0-150600.23.60.5
ocfs2-kmp-default - update to 6.4.0-150600.23.60.5
gfs2-kmp-default - update to 6.4.0-150600.23.60.5
dlm-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-optional - update to 6.4.0-150600.23.60.5
kselftests-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
reiserfs-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.60.5
gfs2-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
kselftests-kmp-default - update to 6.4.0-150600.23.60.5
dlm-kmp-default-debuginfo - 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 - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
python3-perf-debuginfo - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-devel - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-debugsource - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-debuginfo - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
bpftool-debuginfo - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
bpftool - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-headers - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-source - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
python3-perf - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
perf-debuginfo - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
perf - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-tools-devel - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-tools-debuginfo - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-tools - addressed in versions 6.6.0-145.0.12.138, 6.6.0-145.1.12.150
kernel-tools - update to 6.6.102-5
kernel-tools-libs - update to 6.6.102-5
kernel-headers - update to 6.6.102-5
kernel-debug-devel - update to 6.6.102-5
kernel-tools-libs-devel - update to 6.6.102-5
perf - update to 6.6.102-5
python3-perf - update to 6.6.102-5
kernel-64k - update to 6.6.102-5
kernel-64k-debug - update to 6.6.102-5
kernel-64k-debug-devel - update to 6.6.102-5
kernel-64k-devel - update to 6.6.102-5
bpftool - update to 6.6.102-5
kernel - update to 6.6.102-5
kernel-debug - update to 6.6.102-5
kernel-devel - update to 6.6.102-5
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-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

• https://git.kernel.org/stable/c/364618c89d4c57c85e5fc51a2446cd939bf57802
• https://git.kernel.org/stable/c/61fc1a8e1e10cc784cab5829930838aaf1d37af5

• Improper locking in Linux kernel typec ucsi driver
• Debian update for linux
• SUSE update for the Linux Kernel
• Ubuntu update for linux-aws-fips
• Ubuntu update for linux-intel-iot-realtime
• Ubuntu update for linux
• Ubuntu update for linux-intel-iotg-5.15
• Ubuntu update for linux-kvm
• SUSE update for the Linux Kernel
• Ubuntu update for linux-xilinx-zynqmp
• Ubuntu update for linux
• SUSE update for the Linux Kernel
• Ubuntu update for linux-hwe-6.14
• Ubuntu update for linux-azure
• Ubuntu update for linux-azure-fips
• Ubuntu update for linux-raspi
• Ubuntu update for linux-azure-5.15
• Anolis OS update for kernel:6.6
• Ubuntu update for linux
• Ubuntu update for linux-realtime-6.8
• Ubuntu update for linux-gcp-6.8
• Ubuntu update for linux-aws-fips
• Ubuntu update for linux-raspi-realtime
• Ubuntu update for linux-aws
• Ubuntu update for linux-gcp-fips
• Ubuntu update for linux-hwe-6.8
• Ubuntu update for linux-lowlatency
• Ubuntu update for linux-gcp
• Ubuntu update for linux-nvidia-lowlatency
• Ubuntu update for linux-xilinx
• Ubuntu update for linux-ibm
• Ubuntu update for linux-azure-fips
• Ubuntu update for linux-azure
• Ubuntu update for linux-azure-6.8
• openEuler 24.03 LTS SP1 update for kernel
• openEuler 24.03 LTS update for kernel