Improper locking in Linux kernel - CVE-2025-38628

Vulnerability identifier: #VU114531

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-2025-38628

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 mlx5_vdpa_free() and mlx5_vdpa_dev_add() functions in drivers/vdpa/mlx5/net/mlx5_vnet.c, within the mlx5_vdpa_destroy_mr_resources() function in drivers/vdpa/mlx5/core/mr.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
Development Tools Module
SUSE Real Time Module
SUSE Linux Enterprise Live Patching
Public Cloud Module
Legacy Module
Basesystem Module
Ubuntu
kernel-livepatch-6_4_0-150700_7_19-rt-debuginfo
kernel-livepatch-6_4_0-150700_7_19-rt
kernel-livepatch-SLE15-SP7-RT_Update_5-debugsource
kernel-livepatch-6_4_0-150700_53_19-default
kernel-livepatch-SLE15-SP7_Update_5-debugsource
kernel-livepatch-6_4_0-150700_53_19-default-debuginfo
kernel-syms-rt
kernel-rt-devel-debuginfo
kernel-rt-devel
cluster-md-kmp-rt-debuginfo
dlm-kmp-rt
cluster-md-kmp-rt
kernel-rt
kernel-source-rt
kernel-devel-rt
ocfs2-kmp-rt
ocfs2-kmp-rt-debuginfo
gfs2-kmp-rt-debuginfo
kernel-rt-debugsource
kernel-rt-debuginfo
gfs2-kmp-rt
dlm-kmp-rt-debuginfo
kernel-syms-azure
kernel-source-azure
kernel-devel-azure
kernel-azure-debuginfo
kernel-azure-devel
kernel-azure-devel-debuginfo
kernel-azure-debugsource
kernel-azure
kernel-64kb-debugsource
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-default-extra-debuginfo
kernel-64kb
kernel-64kb-devel-debuginfo
kernel-64kb-debuginfo
kernel-64kb-devel
kernel-default
kernel-default-devel-debuginfo
kernel-default-debugsource
kernel-default-debuginfo
kernel-default-devel
kernel-macros
kernel-devel
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-docs
kernel-obs-build-debugsource
kernel-default-extra
cluster-md-kmp-default-debuginfo
ocfs2-kmp-default
dlm-kmp-default-debuginfo
gfs2-kmp-default
dlm-kmp-default
gfs2-kmp-default-debuginfo
cluster-md-kmp-default
reiserfs-kmp-default
reiserfs-kmp-default-debuginfo
kernel-source
kernel-syms
kernel-obs-build
ocfs2-kmp-default-debuginfo
kernel-default-base
linux (Ubuntu package)
linux-oem-6.14 (Ubuntu package)
linux-realtime-6.14 (Ubuntu package)
linux-azure (Ubuntu package)
linux-aws-6.14 (Ubuntu package)
linux-gcp-6.14 (Ubuntu package)

Install update from vendor's repository.

kernel-livepatch-6_4_0-150700_7_19-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_19-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_5-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_53_19-default - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_5-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_19-default-debuginfo - update to 1-150700.15.3.1
kernel-syms-rt - update to 6.4.0-150700.7.19.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.19.1
kernel-rt-devel - update to 6.4.0-150700.7.19.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.19.1
dlm-kmp-rt - update to 6.4.0-150700.7.19.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.19.1
kernel-rt - update to 6.4.0-150700.7.19.1
kernel-source-rt - update to 6.4.0-150700.7.19.1
kernel-devel-rt - update to 6.4.0-150700.7.19.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.19.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.19.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.19.1
kernel-rt-debugsource - update to 6.4.0-150700.7.19.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.19.1
gfs2-kmp-rt - update to 6.4.0-150700.7.19.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.19.1
kernel-syms-azure - update to 6.4.0-150700.20.15.1
kernel-source-azure - update to 6.4.0-150700.20.15.2
kernel-devel-azure - update to 6.4.0-150700.20.15.2
kernel-azure-debuginfo - update to 6.4.0-150700.20.15.2
kernel-azure-devel - update to 6.4.0-150700.20.15.2
kernel-azure-devel-debuginfo - update to 6.4.0-150700.20.15.2
kernel-azure-debugsource - update to 6.4.0-150700.20.15.2
kernel-azure - update to 6.4.0-150700.20.15.2
kernel-64kb-debugsource - update to 6.4.0-150700.53.19.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.19.1
kernel-default-livepatch - update to 6.4.0-150700.53.19.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.19.1
kernel-64kb - update to 6.4.0-150700.53.19.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.19.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.19.1
kernel-64kb-devel - update to 6.4.0-150700.53.19.1
kernel-default - update to 6.4.0-150700.53.19.1
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.19.1
kernel-default-debugsource - update to 6.4.0-150700.53.19.1
kernel-default-debuginfo - update to 6.4.0-150700.53.19.1
kernel-default-devel - update to 6.4.0-150700.53.19.1
kernel-macros - update to 6.4.0-150700.53.19.1
kernel-devel - update to 6.4.0-150700.53.19.1
kernel-zfcpdump - update to 6.4.0-150700.53.19.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.19.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.19.1
kernel-docs - update to 6.4.0-150700.53.19.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.19.1
kernel-default-extra - update to 6.4.0-150700.53.19.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.19.1
ocfs2-kmp-default - update to 6.4.0-150700.53.19.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.19.1
gfs2-kmp-default - update to 6.4.0-150700.53.19.1
dlm-kmp-default - update to 6.4.0-150700.53.19.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.19.1
cluster-md-kmp-default - update to 6.4.0-150700.53.19.1
reiserfs-kmp-default - update to 6.4.0-150700.53.19.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.19.1
kernel-source - update to 6.4.0-150700.53.19.1
kernel-syms - update to 6.4.0-150700.53.19.1
kernel-obs-build - update to 6.4.0-150700.53.19.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.19.1
kernel-default-base - update to 6.4.0-150700.53.19.1.150700.17.13.1
linux (Ubuntu package) - addressed in versions 6.14.0-36.36, 6.14.0-36.36~24.04.1, 6.14.0-1016.16~24.04.1, 6.14.0-1017.17, 6.14.0-1020.21
linux-oem-6.14 (Ubuntu package) - update to 6.14.0-1016.16
linux-realtime-6.14 (Ubuntu package) - update to 6.14.0-1016.16~24.04.1
linux-azure (Ubuntu package) - addressed in versions 6.14.0-1017.17, 6.14.0-1017.17~24.04.1
linux-aws-6.14 (Ubuntu package) - update to 6.14.0-1017.17~24.04.1
linux-gcp-6.14 (Ubuntu package) - addressed in versions 6.14.0-1018.18, 6.14.0-1020.21~24.04.1

• https://git.kernel.org/stable/c/37f26b9013b46457b0a96633fc3a7dc977d8beb1
• https://git.kernel.org/stable/c/6de4ef950dd56a6a81daf92d8a1d864fc6a56971
• https://git.kernel.org/stable/c/cc51a66815999afb7e9cd845968de4fdf07567b7
• https://git.kernel.org/stable/c/cf4fc23d0d3d5b89b36f0d79f2674510bb574d8e

• Improper locking in Linux kernel mlx5 core driver
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Ubuntu update for linux-oem-6.14
• Ubuntu update for linux-realtime-6.14
• Ubuntu update for linux
• Ubuntu update for linux-aws-6.14
• Ubuntu update for linux-gcp-6.14
• Ubuntu update for linux-azure