Improper locking in Linux kernel - CVE-2025-37946

Vulnerability identifier: #VU109534

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-2025-37946

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 disable_slot() function in drivers/pci/hotplug/s390_pci_hpc.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise Desktop 15
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
Legacy Module
SUSE Linux Enterprise Live Patching
Development Tools Module
Basesystem Module
Confidential Computing Module
openSUSE Leap
Ubuntu
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-source-coco
kernel-coco
kernel-coco_debug
kernel-coco_debug-devel
kernel-coco-devel
kernel-coco_debug-debuginfo
kernel-coco_debug-devel-debuginfo
reiserfs-kmp-coco-debuginfo
kernel-coco-debugsource
reiserfs-kmp-coco
kernel-coco-vdso-debuginfo
kernel-syms-coco
kernel-coco-debuginfo
kernel-coco_debug-debugsource
kernel-devel-coco
kernel-obs-qa
kernel-obs-build
dtb-cavium
dtb-rockchip
dtb-xilinx
dtb-qcom
dtb-socionext
dtb-amazon
dtb-apple
dtb-hisilicon
kernel-obs-build-debugsource
dtb-sprd
dtb-amlogic
dtb-exynos
dtb-altera
dtb-lg
dtb-aarch64
dtb-amd
dtb-arm
kernel-docs
kernel-docs-html
dtb-nvidia
dtb-allwinner
dtb-apm
dtb-broadcom
dtb-mediatek
dtb-freescale
dtb-renesas
dtb-marvell
dlm-kmp-64kb
kernel-64kb-extra-debuginfo
kselftests-kmp-64kb-debuginfo
kernel-64kb-devel-debuginfo
kernel-64kb-debugsource
kernel-64kb-extra
kernel-64kb-optional
kernel-64kb
kernel-zfcpdump
reiserfs-kmp-64kb
cluster-md-kmp-64kb
cluster-md-kmp-64kb-debuginfo
dlm-kmp-64kb-debuginfo
kernel-64kb-debuginfo
reiserfs-kmp-64kb-debuginfo
kernel-64kb-optional-debuginfo
ocfs2-kmp-64kb
gfs2-kmp-64kb
kselftests-kmp-64kb
gfs2-kmp-64kb-debuginfo
ocfs2-kmp-64kb-debuginfo
kernel-64kb-devel
kernel-kvmsmall-vdso-debuginfo
kernel-syms
kernel-zfcpdump-debugsource
kernel-source
kernel-kvmsmall-devel
kernel-kvmsmall-debuginfo
kernel-kvmsmall-debugsource
kernel-kvmsmall-devel-debuginfo
kernel-debug-vdso-debuginfo
kernel-kvmsmall-vdso
kernel-zfcpdump-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-macros
kernel-kvmsmall
cluster-md-kmp-default
kernel-default-livepatch-devel
kernel-default
kernel-default-extra-debuginfo
kernel-default-devel-debuginfo
kernel-default-vdso
kernel-default-extra
kernel-default-vdso-debuginfo
kernel-default-livepatch
ocfs2-kmp-default-debuginfo
reiserfs-kmp-default-debuginfo
kselftests-kmp-default
gfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kernel-default-optional-debuginfo
dlm-kmp-default
kernel-default-debugsource
dlm-kmp-default-debuginfo
kernel-default-devel
reiserfs-kmp-default
kselftests-kmp-default-debuginfo
gfs2-kmp-default
ocfs2-kmp-default
kernel-default-debuginfo
kernel-default-optional
kernel-default-base
kernel-default-base-rebuild
linux (Ubuntu package)
linux-oem-6.14 (Ubuntu package)
linux-oracle (Ubuntu package)
linux-aws (Ubuntu package)
linux-aws-6.14 (Ubuntu package)

Install update from vendor's website.

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-source-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-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
reiserfs-kmp-coco-debuginfo - update to 6.4.0-15061.28.coco15sp6.1
kernel-coco-debugsource - update to 6.4.0-15061.28.coco15sp6.1
reiserfs-kmp-coco - 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-debuginfo - 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-obs-qa - update to 6.4.0-150600.23.60.2
kernel-obs-build - update to 6.4.0-150600.23.60.3
dtb-cavium - update to 6.4.0-150600.23.60.3
dtb-rockchip - 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-socionext - update to 6.4.0-150600.23.60.3
dtb-amazon - update to 6.4.0-150600.23.60.3
dtb-apple - 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-sprd - update to 6.4.0-150600.23.60.3
dtb-amlogic - update to 6.4.0-150600.23.60.3
dtb-exynos - update to 6.4.0-150600.23.60.3
dtb-altera - update to 6.4.0-150600.23.60.3
dtb-lg - 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
kernel-docs - update to 6.4.0-150600.23.60.3
kernel-docs-html - update to 6.4.0-150600.23.60.3
dtb-nvidia - update to 6.4.0-150600.23.60.3
dtb-allwinner - 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-mediatek - update to 6.4.0-150600.23.60.3
dtb-freescale - 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
dlm-kmp-64kb - update to 6.4.0-150600.23.60.4
kernel-64kb-extra-debuginfo - update to 6.4.0-150600.23.60.4
kselftests-kmp-64kb-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-debugsource - update to 6.4.0-150600.23.60.4
kernel-64kb-extra - 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-zfcpdump - update to 6.4.0-150600.23.60.4
reiserfs-kmp-64kb - update to 6.4.0-150600.23.60.4
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-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-optional-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
gfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
ocfs2-kmp-64kb-debuginfo - update to 6.4.0-150600.23.60.4
kernel-64kb-devel - update to 6.4.0-150600.23.60.4
kernel-kvmsmall-vdso-debuginfo - update to 6.4.0-150600.23.60.4
kernel-syms - update to 6.4.0-150600.23.60.4
kernel-zfcpdump-debugsource - 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-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-zfcpdump-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-macros - update to 6.4.0-150600.23.60.4
kernel-kvmsmall - update to 6.4.0-150600.23.60.4
cluster-md-kmp-default - 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-vdso - update to 6.4.0-150600.23.60.5
kernel-default-extra - 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 - 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
kernel-default-optional-debuginfo - update to 6.4.0-150600.23.60.5
dlm-kmp-default - update to 6.4.0-150600.23.60.5
kernel-default-debugsource - update to 6.4.0-150600.23.60.5
dlm-kmp-default-debuginfo - update to 6.4.0-150600.23.60.5
kernel-default-devel - 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
kernel-default-optional - 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
linux (Ubuntu package) - addressed in versions 6.14.0-24.24, 6.14.0-1006.6, 6.14.0-1009.9, 6.14.0-1011.11
linux-oem-6.14 (Ubuntu package) - update to 6.14.0-1007.7
linux-oracle (Ubuntu package) - update to 6.14.0-1009.9
linux-aws (Ubuntu package) - update to 6.14.0-1009.9
linux-aws-6.14 (Ubuntu package) - update to 6.14.0-1009.9~24.04.1

• https://git.kernel.org/stable/c/05a2538f2b48500cf4e8a0a0ce76623cc5bafcf1
• https://git.kernel.org/stable/c/957529baef142d95e0d1b1bea786675bd47dbe53
• https://git.kernel.org/stable/c/c488f8b53e156d6dcc0514ef0afa3a33376b8f9e

• Improper locking in Linux kernel pci hotplug driver
• Ubuntu update for linux-oem-6.14
• Ubuntu update for linux
• Ubuntu update for linux-aws
• Ubuntu update for linux-oracle
• Ubuntu update for linux-aws-6.14
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel