Buffer overflow in Linux kernel - CVE-2025-38453

Vulnerability identifier: #VU113330

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-2025-38453

CWE-ID: CWE-119

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 memory corruption within the io_msg_tw_complete() and io_msg_remote_post() functions in io_uring/msg_ring.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 Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Live Patching
Public Cloud Module
Legacy Module
Development Tools Module
Basesystem Module
SUSE Real Time Module
Ubuntu
linux-oem-6.14 (Ubuntu package)
linux-oracle-6.14 (Ubuntu package)
linux-aws-6.14 (Ubuntu package)
linux-realtime-6.14 (Ubuntu package)
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
kernel-rt-devel-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-azure-debuginfo
kernel-azure
kernel-azure-devel
kernel-azure-debugsource
kernel-azure-devel-debuginfo
kernel-syms-azure
kernel-devel-azure
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
ocfs2-kmp-default-debuginfo
kernel-default-extra-debuginfo
kernel-default-extra
cluster-md-kmp-default
kernel-default-livepatch
kernel-default-livepatch-devel
kernel-devel
kernel-64kb-devel
kernel-64kb-devel-debuginfo
kernel-64kb-debugsource
kernel-64kb-debuginfo
kernel-default
kernel-64kb
kernel-default-devel-debuginfo
kernel-default-debuginfo
kernel-default-devel
kernel-default-debugsource
kernel-macros
kernel-zfcpdump
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
reiserfs-kmp-default-debuginfo
kernel-obs-build
kernel-obs-build-debugsource
kernel-syms
kernel-source
reiserfs-kmp-default
kernel-default-base
kernel-docs
kernel-livepatch-6_4_0-150700_53_3-default
kernel-livepatch-SLE15-SP7_Update_1-debugsource
kernel-livepatch-6_4_0-150700_53_3-default-debuginfo
kernel-livepatch-6_4_0-150700_51-default
kernel-livepatch-SLE15-SP7_Update_0-debugsource
kernel-livepatch-6_4_0-150700_51-default-debuginfo
kernel-livepatch-SLE15-SP7-RT_Update_1-debugsource
kernel-livepatch-SLE15-SP7_Update_2-debugsource
kernel-livepatch-6_4_0-150700_53_6-default-debuginfo
kernel-livepatch-6_4_0-150700_53_6-default
kernel-livepatch-SLE15-SP7-RT_Update_2-debugsource
kernel-livepatch-6_4_0-150700_7_3-rt
kernel-livepatch-6_4_0-150700_7_8-rt-debuginfo
kernel-livepatch-6_4_0-150700_7_8-rt
kernel-livepatch-6_4_0-150700_7_3-rt-debuginfo
kernel-livepatch-SLE15-SP7-RT_Update_0-debugsource
kernel-livepatch-6_4_0-150700_5-rt-debuginfo
kernel-livepatch-6_4_0-150700_5-rt
linux (Debian package)
linux (Ubuntu package)
linux-azure (Ubuntu package)
linux-gcp-6.14 (Ubuntu package)

Install update from vendor's repository.

linux-oem-6.14 (Ubuntu package) - update to 6.14.0-1016.16
linux-oracle-6.14 (Ubuntu package) - update to 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-realtime-6.14 (Ubuntu package) - update to 6.14.0-1016.16~24.04.1
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
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.13.1
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-azure-debuginfo - 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-azure-devel-debuginfo - update to 6.4.0-150700.20.11.1
kernel-syms-azure - update to 6.4.0-150700.20.11.1
kernel-devel-azure - 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
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
cluster-md-kmp-default - 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
kernel-devel - 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-64kb - 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
reiserfs-kmp-default-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-syms - update to 6.4.0-150700.53.11.1
kernel-source - update to 6.4.0-150700.53.11.1
reiserfs-kmp-default - 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
kernel-livepatch-6_4_0-150700_53_3-default - update to 7-150700.2.1
kernel-livepatch-SLE15-SP7_Update_1-debugsource - update to 7-150700.2.1
kernel-livepatch-6_4_0-150700_53_3-default-debuginfo - update to 7-150700.2.1
kernel-livepatch-6_4_0-150700_51-default - update to 7-150700.3.18.1
kernel-livepatch-SLE15-SP7_Update_0-debugsource - update to 7-150700.3.18.1
kernel-livepatch-6_4_0-150700_51-default-debuginfo - update to 7-150700.3.18.1
kernel-livepatch-SLE15-SP7-RT_Update_1-debugsource - update to 7-150700.4.1
kernel-livepatch-SLE15-SP7_Update_2-debugsource - update to 7-150700.4.1
kernel-livepatch-6_4_0-150700_53_6-default-debuginfo - update to 7-150700.4.1
kernel-livepatch-6_4_0-150700_53_6-default - update to 7-150700.4.1
kernel-livepatch-SLE15-SP7-RT_Update_2-debugsource - update to 7-150700.4.1
kernel-livepatch-6_4_0-150700_7_3-rt - update to 7-150700.4.1
kernel-livepatch-6_4_0-150700_7_8-rt-debuginfo - update to 7-150700.4.1
kernel-livepatch-6_4_0-150700_7_8-rt - update to 7-150700.4.1
kernel-livepatch-6_4_0-150700_7_3-rt-debuginfo - update to 7-150700.4.1
kernel-livepatch-SLE15-SP7-RT_Update_0-debugsource - update to 7-150700.5.1
kernel-livepatch-6_4_0-150700_5-rt-debuginfo - update to 7-150700.5.1
kernel-livepatch-6_4_0-150700_5-rt - update to 7-150700.5.1
linux (Debian package) - update to 6.12.48-1
linux (Ubuntu package) - addressed in versions 6.14.0-36.36~24.04.1, 6.14.0-36.36, 6.14.0-1016.16~24.04.1, 6.14.0-1017.17, 6.14.0-1020.21
linux-azure (Ubuntu package) - addressed in versions 6.14.0-1017.17~24.04.1, 6.14.0-1017.17
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/e5b3432f4a6b418b8bd8fc91f38efbf17a77167a
• https://git.kernel.org/stable/c/fc582cd26e888b0652bc1494f252329453fd3b23

• Buffer overflow in Linux kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Debian update for linux
• SUSE update for the Linux Kernel RT (Live Patch 2 for SLE 15 SP7)
• SUSE update for the Linux Kernel (Live Patch 2 for SLE 15 SP7)
• SUSE update for the Linux Kernel (Live Patch 1 for SLE 15 SP7)
• SUSE update for the Linux Kernel (Live Patch 0 for SLE 15 SP7)
• 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