Use-after-free in Linux kernel - CVE-2025-38475

Vulnerability identifier: #VU113374

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-2025-38475

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to a use-after-free error within the IS_ENABLED() and smc_destruct() functions in net/smc/af_smc.c. A local user can escalate privileges on the system.

Linux kernel
Debian Linux
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Live Patching
Public Cloud Module
Legacy Module
Development Tools Module
Basesystem Module
SUSE Real Time Module
Ubuntu
kernel-livepatch-6_4_0-150700_7_13-rt
kernel-livepatch-SLE15-SP7-RT_Update_3-debugsource
kernel-livepatch-6_4_0-150700_7_13-rt-debuginfo
kernel-livepatch-SLE15-SP7_Update_3-debugsource
kernel-livepatch-6_4_0-150700_53_11-default
kernel-livepatch-6_4_0-150700_53_11-default-debuginfo
dlm-kmp-rt
kernel-rt
kernel-devel-rt
kernel-source-rt
dlm-kmp-rt-debuginfo
kernel-rt-debugsource
gfs2-kmp-rt
kernel-rt-debuginfo
ocfs2-kmp-rt-debuginfo
gfs2-kmp-rt-debuginfo
cluster-md-kmp-rt
cluster-md-kmp-rt-debuginfo
ocfs2-kmp-rt
kernel-rt-devel
kernel-syms-rt
kernel-rt-devel-debuginfo
kernel-devel-azure
kernel-azure
kernel-azure-devel
kernel-azure-debugsource
kernel-syms-azure
kernel-azure-devel-debuginfo
kernel-azure-debuginfo
kernel-source-azure
dlm-kmp-default-debuginfo
gfs2-kmp-default
dlm-kmp-default
cluster-md-kmp-default-debuginfo
ocfs2-kmp-default
gfs2-kmp-default-debuginfo
cluster-md-kmp-default
ocfs2-kmp-default-debuginfo
kernel-default-extra-debuginfo
kernel-default-extra
kernel-syms
kernel-default-livepatch
kernel-default-livepatch-devel
reiserfs-kmp-default
kernel-64kb
kernel-64kb-devel
kernel-64kb-devel-debuginfo
kernel-64kb-debugsource
kernel-64kb-debuginfo
kernel-default
kernel-default-devel-debuginfo
kernel-default-debuginfo
kernel-default-devel
kernel-default-debugsource
kernel-macros
kernel-zfcpdump
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-obs-build
kernel-obs-build-debugsource
kernel-source
reiserfs-kmp-default-debuginfo
kernel-devel
kernel-default-base
kernel-docs
linux (Debian package)
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_13-rt - update to 1-150700.1.5.1
kernel-livepatch-SLE15-SP7-RT_Update_3-debugsource - update to 1-150700.1.5.1
kernel-livepatch-6_4_0-150700_7_13-rt-debuginfo - update to 1-150700.1.5.1
kernel-livepatch-SLE15-SP7_Update_3-debugsource - update to 1-150700.15.3.4
kernel-livepatch-6_4_0-150700_53_11-default - update to 1-150700.15.3.4
kernel-livepatch-6_4_0-150700_53_11-default-debuginfo - update to 1-150700.15.3.4
dlm-kmp-rt - update to 6.4.0-150700.7.13.1
kernel-rt - update to 6.4.0-150700.7.13.1
kernel-devel-rt - update to 6.4.0-150700.7.13.1
kernel-source-rt - update to 6.4.0-150700.7.13.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.13.1
kernel-rt-debugsource - update to 6.4.0-150700.7.13.1
gfs2-kmp-rt - update to 6.4.0-150700.7.13.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.13.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.13.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.13.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.13.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.13.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.13.1
kernel-rt-devel - update to 6.4.0-150700.7.13.1
kernel-syms-rt - update to 6.4.0-150700.7.13.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.13.1
kernel-devel-azure - update to 6.4.0-150700.20.11.1
kernel-azure - update to 6.4.0-150700.20.11.1
kernel-azure-devel - update to 6.4.0-150700.20.11.1
kernel-azure-debugsource - update to 6.4.0-150700.20.11.1
kernel-syms-azure - update to 6.4.0-150700.20.11.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.20.11.1
kernel-azure-debuginfo - update to 6.4.0-150700.20.11.1
kernel-source-azure - update to 6.4.0-150700.20.11.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.11.1
gfs2-kmp-default - update to 6.4.0-150700.53.11.1
dlm-kmp-default - update to 6.4.0-150700.53.11.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.11.1
ocfs2-kmp-default - update to 6.4.0-150700.53.11.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.11.1
cluster-md-kmp-default - update to 6.4.0-150700.53.11.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.11.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.11.1
kernel-default-extra - update to 6.4.0-150700.53.11.1
kernel-syms - update to 6.4.0-150700.53.11.1
kernel-default-livepatch - update to 6.4.0-150700.53.11.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.11.1
reiserfs-kmp-default - update to 6.4.0-150700.53.11.1
kernel-64kb - update to 6.4.0-150700.53.11.1
kernel-64kb-devel - update to 6.4.0-150700.53.11.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.11.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.11.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.11.1
kernel-default - update to 6.4.0-150700.53.11.1
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.11.1
kernel-default-debuginfo - update to 6.4.0-150700.53.11.1
kernel-default-devel - update to 6.4.0-150700.53.11.1
kernel-default-debugsource - update to 6.4.0-150700.53.11.1
kernel-macros - update to 6.4.0-150700.53.11.1
kernel-zfcpdump - update to 6.4.0-150700.53.11.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.11.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.11.1
kernel-obs-build - update to 6.4.0-150700.53.11.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.11.1
kernel-source - update to 6.4.0-150700.53.11.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.11.1
kernel-devel - update to 6.4.0-150700.53.11.1
kernel-default-base - update to 6.4.0-150700.53.11.1.150700.17.9.4
kernel-docs - update to 6.4.0-150700.53.11.3
linux (Debian package) - update to 6.12.41-1
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/5b02e397929e5b13b969ef1f8e43c7951e2864f5
• https://git.kernel.org/stable/c/60ada4fe644edaa6c2da97364184b0425e8aeaf5
• https://git.kernel.org/stable/c/67a167a6b8b45607bc34aa541d1c75097d18d460

• Use-after-free in Linux kernel smc
• Debian update for linux
• 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