Input validation error in Linux kernel - CVE-2025-40287

Vulnerability identifier: #VU119348

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-2025-40287

CWE-ID: CWE-20

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 input validation within the exfat_find() function in fs/exfat/namei.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
Basesystem Module
Development Tools Module
Legacy Module
Public Cloud Module
SUSE Linux Enterprise Live Patching
SUSE Real Time Module
Ubuntu
kernel-livepatch-6_4_0-150700_7_28-rt
kernel-livepatch-SLE15-SP7-RT_Update_8-debugsource
kernel-livepatch-6_4_0-150700_7_28-rt-debuginfo
kernel-livepatch-6_4_0-150700_53_28-default
kernel-livepatch-SLE15-SP7_Update_8-debugsource
kernel-livepatch-6_4_0-150700_53_28-default-debuginfo
gfs2-kmp-rt-debuginfo
kernel-rt
kernel-source-rt
kernel-devel-rt
dlm-kmp-rt
kernel-rt-devel-debuginfo
kernel-rt-debugsource
gfs2-kmp-rt
cluster-md-kmp-rt
dlm-kmp-rt-debuginfo
ocfs2-kmp-rt-debuginfo
kernel-rt-debuginfo
kernel-rt-devel
ocfs2-kmp-rt
kernel-syms-rt
cluster-md-kmp-rt-debuginfo
kernel-azure-debuginfo
kernel-source-azure
kernel-devel-azure
kernel-azure
kernel-azure-devel
kernel-azure-devel-debuginfo
kernel-syms-azure
kernel-azure-debugsource
cluster-md-kmp-default
kernel-docs
kernel-syms
kernel-obs-build
kernel-source
reiserfs-kmp-default-debuginfo
reiserfs-kmp-default
dlm-kmp-default-debuginfo
dlm-kmp-default
ocfs2-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
ocfs2-kmp-default
gfs2-kmp-default
gfs2-kmp-default-debuginfo
kernel-default-extra-debuginfo
kernel-default-extra
kernel-obs-build-debugsource
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-default
kernel-default-debuginfo
kernel-default-livepatch
kernel-default-debugsource
kernel-default-livepatch-devel
kernel-64kb
kernel-64kb-debuginfo
kernel-64kb-debugsource
kernel-64kb-devel-debuginfo
kernel-64kb-devel
kernel-default-devel-debuginfo
kernel-default-devel
kernel-macros
kernel-devel
kernel-zfcpdump
kernel-default-base
linux (Ubuntu package)
linux-aws-fips (Ubuntu package)
linux-xilinx (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-raspi (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-6.8 (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-realtime (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oem-6.17 (Ubuntu package)

Install update from vendor's repository.

kernel-livepatch-6_4_0-150700_7_28-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_8-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_28-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_53_28-default - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_8-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_28-default-debuginfo - update to 1-150700.15.3.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.28.1
kernel-rt - update to 6.4.0-150700.7.28.1
kernel-source-rt - update to 6.4.0-150700.7.28.1
kernel-devel-rt - update to 6.4.0-150700.7.28.1
dlm-kmp-rt - update to 6.4.0-150700.7.28.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.28.1
kernel-rt-debugsource - update to 6.4.0-150700.7.28.1
gfs2-kmp-rt - update to 6.4.0-150700.7.28.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.28.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.28.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.28.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.28.1
kernel-rt-devel - update to 6.4.0-150700.7.28.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.28.1
kernel-syms-rt - update to 6.4.0-150700.7.28.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.28.1
kernel-azure-debuginfo - update to 6.4.0-150700.20.24.1
kernel-source-azure - update to 6.4.0-150700.20.24.1
kernel-devel-azure - update to 6.4.0-150700.20.24.1
kernel-azure - update to 6.4.0-150700.20.24.1
kernel-azure-devel - update to 6.4.0-150700.20.24.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.20.24.1
kernel-syms-azure - update to 6.4.0-150700.20.24.1
kernel-azure-debugsource - update to 6.4.0-150700.20.24.1
cluster-md-kmp-default - update to 6.4.0-150700.53.28.1
kernel-docs - update to 6.4.0-150700.53.28.1
kernel-syms - update to 6.4.0-150700.53.28.1
kernel-obs-build - update to 6.4.0-150700.53.28.1
kernel-source - update to 6.4.0-150700.53.28.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.28.1
reiserfs-kmp-default - update to 6.4.0-150700.53.28.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.28.1
dlm-kmp-default - update to 6.4.0-150700.53.28.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.28.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.28.1
ocfs2-kmp-default - update to 6.4.0-150700.53.28.1
gfs2-kmp-default - update to 6.4.0-150700.53.28.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.28.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.28.1
kernel-default-extra - update to 6.4.0-150700.53.28.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.28.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.28.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.28.1
kernel-default - update to 6.4.0-150700.53.28.1
kernel-default-debuginfo - update to 6.4.0-150700.53.28.1
kernel-default-livepatch - update to 6.4.0-150700.53.28.1
kernel-default-debugsource - update to 6.4.0-150700.53.28.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.28.1
kernel-64kb - update to 6.4.0-150700.53.28.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.28.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.28.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.28.1
kernel-64kb-devel - update to 6.4.0-150700.53.28.1
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.28.1
kernel-default-devel - update to 6.4.0-150700.53.28.1
kernel-macros - update to 6.4.0-150700.53.28.1
kernel-devel - update to 6.4.0-150700.53.28.1
kernel-zfcpdump - update to 6.4.0-150700.53.28.1
kernel-default-base - update to 6.4.0-150700.53.28.1.150700.17.19.1
linux (Ubuntu package) - addressed in versions 6.8.0-106.106, 6.8.0-106.106.1, 6.8.0-106.106.1~22.04.1, 6.8.0-106.106~22.04.1, 6.8.0-1035.38, 6.8.0-1047.48, 6.8.0-1047.48~22.04.1, 6.8.0-1048.53, 6.8.0-1049.49, 6.8.0-1049.49~22.04.1, 6.8.0-1050.53, 6.8.0-1052.55, 6.8.0-1052.55~22.04.1, 6.17.0-14.14, 6.17.0-1006.7, 6.17.0-1008.8
linux-aws-fips (Ubuntu package) - addressed in versions 6.8.0-106.106+fips1, 6.8.0-1050.53+fips1, 6.8.0-1052.55+fips1
linux-xilinx (Ubuntu package) - update to 6.8.0-1029.30
linux-nvidia (Ubuntu package) - addressed in versions 6.8.0-1049.52, 6.8.0-1049.52.1, 6.8.0-1049.52~22.04.1
linux-aws-6.8 (Ubuntu package) - update to 6.8.0-1050.53~22.04.1
linux-raspi (Ubuntu package) - addressed in versions 6.8.0-1050.54, 6.8.0-2040.41
linux-azure (Ubuntu package) - addressed in versions 6.8.0-1051.57, 6.17.0-1008.8
linux-azure-6.8 (Ubuntu package) - update to 6.8.0-1051.57~22.04.1
linux-azure-fips (Ubuntu package) - update to 6.8.0-1052.58+fips1
linux-realtime (Ubuntu package) - addressed in versions 6.8.1-1045.46, 6.8.1-1045.46~22.04.1
linux-aws (Ubuntu package) - update to 6.17.0-1007.7
linux-gcp (Ubuntu package) - update to 6.17.0-1007.7
linux-oem-6.17 (Ubuntu package) - update to 6.17.0-1011.11

• https://git.kernel.org/stable/c/204b1b02ee018ba52ad2ece21fe3a8643d66a1b2
• https://git.kernel.org/stable/c/6c627bcc1896ba62ec793d0c00da74f3c93ce3ad
• https://git.kernel.org/stable/c/82ebecdc74ff555daf70b811d854b1f32a296bea

• Input validation error in Linux kernel exfat
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Ubuntu update for linux-gcp
• Ubuntu update for linux
• Ubuntu update for linux-aws
• Ubuntu update for linux-oem-6.17
• Ubuntu update for linux-azure
• Ubuntu update for linux
• Ubuntu update for linux-aws-fips
• Ubuntu update for linux-nvidia
• Ubuntu update for linux-realtime
• Ubuntu update for linux-aws-6.8
• Ubuntu update for linux-azure-6.8
• Ubuntu update for linux-azure
• Ubuntu update for linux-raspi
• Ubuntu update for linux-azure-fips
• Ubuntu update for linux-xilinx