Memory leak in Linux kernel - CVE-2026-23145

Vulnerability identifier: #VU122859

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-2026-23145

CWE-ID: CWE-401

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 leak within the ext4_xattr_inode_update_ref() function in fs/ext4/xattr.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
Public Cloud Module
Development Tools Module
Basesystem Module
SUSE Linux Enterprise Live Patching
SUSE Real Time Module
Legacy Module
Ubuntu
openEuler
linux-gcp-5.15 (Ubuntu package)
kernel-livepatch-6_4_0-150700_7_34-rt
kernel-livepatch-SLE15-SP7-RT_Update_10-debugsource
kernel-livepatch-6_4_0-150700_7_34-rt-debuginfo
kernel-livepatch-SLE15-SP7_Update_10-debugsource
kernel-livepatch-6_4_0-150700_53_34-default
kernel-livepatch-6_4_0-150700_53_34-default-debuginfo
kernel-rt-debuginfo
kernel-rt
kernel-source-rt
kernel-devel-rt
cluster-md-kmp-rt-debuginfo
dlm-kmp-rt
dlm-kmp-rt-debuginfo
cluster-md-kmp-rt
gfs2-kmp-rt
kernel-syms-rt
ocfs2-kmp-rt-debuginfo
kernel-rt-devel-debuginfo
kernel-rt-devel
ocfs2-kmp-rt
gfs2-kmp-rt-debuginfo
kernel-rt-debugsource
ocfs2-kmp-default-debuginfo
kernel-azure
kernel-azure-debugsource
kernel-azure-debuginfo
kernel-azure-devel
kernel-azure-devel-debuginfo
reiserfs-kmp-default-debuginfo
cluster-md-kmp-default
dlm-kmp-default-debuginfo
ocfs2-kmp-default
gfs2-kmp-default-debuginfo
gfs2-kmp-default
dlm-kmp-default
cluster-md-kmp-default-debuginfo
kernel-default-extra-debuginfo
kernel-default-extra
kernel-default-livepatch
kernel-default-livepatch-devel
kernel-default-devel
kernel-64kb
kernel-64kb-devel
kernel-64kb-debugsource
kernel-64kb-devel-debuginfo
kernel-64kb-debuginfo
kernel-default
reiserfs-kmp-default
kernel-default-debugsource
kernel-default-devel-debuginfo
kernel-default-debuginfo
kernel-devel
kernel-macros
kernel-zfcpdump
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-docs
kernel-obs-build
kernel-obs-build-debugsource
kernel-syms
kernel-source
kernel-default-base
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-debugsource
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-headers
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel
kernel-extra-modules
linux (Ubuntu package)
linux-hwe-5.15 (Ubuntu package)
linux-fips (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-nvidia-tegra-5.15 (Ubuntu package)
linux-xilinx-zynqmp (Ubuntu package)
linux-intel-iot-realtime (Ubuntu package)
linux-azure (Ubuntu package)
linux-ibm (Ubuntu package)
linux-raspi (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-nvidia-6.8 (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-azure-fde-6.17 (Ubuntu package)
linux-gcp-6.17 (Ubuntu package)
linux-oracle-6.17 (Ubuntu package)
linux-azure-6.17 (Ubuntu package)
linux-oem-6.17 (Ubuntu package)
linux-nvidia-6.17 (Ubuntu package)

Install update from vendor's repository.

linux-gcp-5.15 (Ubuntu package) - update to 5.15.0-1106.115~20.04.1
kernel-livepatch-6_4_0-150700_7_34-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_10-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_34-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7_Update_10-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_34-default - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_34-default-debuginfo - update to 1-150700.15.3.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.34.1
kernel-rt - update to 6.4.0-150700.7.34.1
kernel-source-rt - update to 6.4.0-150700.7.34.1
kernel-devel-rt - update to 6.4.0-150700.7.34.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.34.1
dlm-kmp-rt - update to 6.4.0-150700.7.34.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.34.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.34.1
gfs2-kmp-rt - update to 6.4.0-150700.7.34.1
kernel-syms-rt - update to 6.4.0-150700.7.34.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.34.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.34.1
kernel-rt-devel - update to 6.4.0-150700.7.34.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.34.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.34.1
kernel-rt-debugsource - update to 6.4.0-150700.7.34.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.34.1
kernel-azure - update to 6.4.0-150700.53.34.1
kernel-azure-debugsource - update to 6.4.0-150700.53.34.1
kernel-azure-debuginfo - update to 6.4.0-150700.53.34.1
kernel-azure-devel - update to 6.4.0-150700.53.34.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.53.34.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.34.1
cluster-md-kmp-default - update to 6.4.0-150700.53.34.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.34.1
ocfs2-kmp-default - update to 6.4.0-150700.53.34.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.34.1
gfs2-kmp-default - update to 6.4.0-150700.53.34.1
dlm-kmp-default - update to 6.4.0-150700.53.34.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.34.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.34.1
kernel-default-extra - update to 6.4.0-150700.53.34.1
kernel-default-livepatch - update to 6.4.0-150700.53.34.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.34.1
kernel-default-devel - update to 6.4.0-150700.53.34.1
kernel-64kb - update to 6.4.0-150700.53.34.1
kernel-64kb-devel - update to 6.4.0-150700.53.34.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.34.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.34.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.34.1
kernel-default - update to 6.4.0-150700.53.34.1
reiserfs-kmp-default - update to 6.4.0-150700.53.34.1
kernel-default-debugsource - update to 6.4.0-150700.53.34.1
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.34.1
kernel-default-debuginfo - update to 6.4.0-150700.53.34.1
kernel-devel - update to 6.4.0-150700.53.34.1
kernel-macros - update to 6.4.0-150700.53.34.1
kernel-zfcpdump - update to 6.4.0-150700.53.34.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.34.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.34.1
kernel-docs - update to 6.4.0-150700.53.34.1
kernel-obs-build - update to 6.4.0-150700.53.34.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.34.1
kernel-syms - update to 6.4.0-150700.53.34.1
kernel-source - update to 6.4.0-150700.53.34.1
kernel-default-base - update to 6.4.0-150700.53.34.1.150700.17.23.1
python3-perf-debuginfo - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
python3-perf - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
perf-debuginfo - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
perf - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
kernel-debugsource - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
kernel-tools-devel - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
kernel-tools-debuginfo - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
kernel-tools - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
kernel-headers - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
kernel-devel - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
kernel-debuginfo - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
bpftool-debuginfo - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
bpftool - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
kernel - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
kernel-source - addressed in versions 6.6.0-144.0.0.139, 6.6.0-145.0.0.128, 6.6.0-145.0.0.141
kernel-extra-modules - update to 6.6.0-145.0.0.141
linux (Ubuntu package) - addressed in versions 5.15.0-175.185~20.04.1, 5.15.0-175.185, 5.15.0-176.186, 5.15.0-1088.96, 5.15.0-1100.101, 5.15.0-1101.107~20.04.1, 5.15.0-1102.108, 5.15.0-1105.112~20.04.1, 5.15.0-1105.112, 5.15.0-1105.114, 5.15.0.175.148, 5.15.0.176.161, 5.15.0.1088.87, 5.15.0.1100.100, 5.15.0.1101.100, 5.15.0.1102.98, 5.15.0.1105.101, 5.15.0.1105.108, 6.8.0-117.117, 6.8.0-117.117.1~22.04.1, 6.8.0-117.117.1, 6.8.0-1041.44, 6.8.0-1054.60, 6.8.0-1055.56~22.04.1, 6.8.0-1055.56, 6.8.0-1055.58+fips1, 6.8.0-1056.60, 6.8.0-1058.61, 6.8.0-1058.61+fips1, 6.8.0-2045.46, 6.8.1-1051.52~22.04.1, 6.8.1-1051.52
linux-hwe-5.15 (Ubuntu package) - update to 5.15.0-176.186~20.04.1
linux-fips (Ubuntu package) - addressed in versions 5.15.0-176.186+fips1, 5.15.0-1105.114+fips1, 5.15.0.176.102, 5.15.0.1105.95, 6.8.0-116.116+fips1
linux-nvidia-tegra (Ubuntu package) - addressed in versions 5.15.0-1046.46+1, 5.15.0-1057.57, 5.15.0.1046.48, 6.8.0-1024.24
linux-nvidia-tegra-5.15 (Ubuntu package) - update to 5.15.0-1057.57~20.04.1
linux-xilinx-zynqmp (Ubuntu package) - addressed in versions 5.15.0-1070.74, 5.15.0.1070.73
linux-intel-iot-realtime (Ubuntu package) - addressed in versions 5.15.0-1097.99, 5.15.0-1104.113, 5.15.0.1097.101, 5.15.0.1104.108
linux-azure (Ubuntu package) - addressed in versions 5.15.0-1097.102, 5.15.0-1100.106~20.04.1, 5.15.0-1100.106, 5.15.0-1102.108~20.04.1, 5.15.0-1110.119, 5.15.0.1097.93, 5.15.0.1100.99, 5.15.0.1110.108, 6.8.0-1056.62
linux-ibm (Ubuntu package) - addressed in versions 5.15.0-1099.102~20.04.1, 5.15.0-1099.102, 5.15.0.1099.95
linux-raspi (Ubuntu package) - addressed in versions 5.15.0-1099.102, 5.15.0.1099.97
linux-azure-fips (Ubuntu package) - addressed in versions 5.15.0-1110.119+fips1, 5.15.0.1110.95
linux-nvidia-6.8 (Ubuntu package) - update to 6.8.0-1054.57~22.04.1
linux-nvidia (Ubuntu package) - addressed in versions 6.8.0-1054.57, 6.8.0-1054.57.1
linux-azure-fde-6.17 (Ubuntu package) - update to 6.17.0-1018.18~24.04.1
linux-gcp-6.17 (Ubuntu package) - addressed in versions 6.17.0-1018.20~24.04.1, 6.17.0-1021.24~24.04.1
linux-oracle-6.17 (Ubuntu package) - addressed in versions 6.17.0-1019.19~24.04.3, 6.17.0-1019.19~24.04.3+1
linux-azure-6.17 (Ubuntu package) - update to 6.17.0-1021.21~24.04.1
linux-oem-6.17 (Ubuntu package) - update to 6.17.0-1030.30
linux-nvidia-6.17 (Ubuntu package) - update to 6.17.0-1031.31

• https://git.kernel.org/stable/c/06e26287f2e349a28ad363941ffd9076bfed8b2e
• https://git.kernel.org/stable/c/0b06cde92f2f960f4ebe3c988c69f2711f2a24dc
• https://git.kernel.org/stable/c/3b00c16e42428a1ecd3a5eb9cc37f8ad9bd47626
• https://git.kernel.org/stable/c/6241cd1d0acc2363016ac55b8773ba1332dd59d7
• https://git.kernel.org/stable/c/7c9f059c3d531a12d7ad96cd34a44b8af7c00d5f
• https://git.kernel.org/stable/c/8e8542c539927ae3898a4d02941f84e252e2dea1
• https://git.kernel.org/stable/c/d250bdf531d9cd4096fedbb9f172bb2ca660c868

• Memory leak in Linux kernel ext4
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• openEuler 24.03 LTS SP1 update for kernel
• openEuler 24.03 LTS SP2 update for kernel
• openEuler 24.03 LTS update for kernel
• Ubuntu update for linux-nvidia-tegra-5.15
• Ubuntu update for linux
• Ubuntu update for linux-fips
• Ubuntu update for linux-hwe-5.15
• Ubuntu update for linux-nvidia-tegra
• Ubuntu update for linux-intel-iot-realtime
• Ubuntu update for linux-azure-fips
• Ubuntu update for linux-azure
• Ubuntu update for linux-ibm
• Ubuntu update for linux-raspi
• Ubuntu update for linux-xilinx-zynqmp
• Ubuntu update for linux
• Ubuntu update for linux-nvidia
• Ubuntu update for linux-fips
• Ubuntu update for linux-nvidia-tegra
• Ubuntu update for linux-nvidia-6.8
• Ubuntu update for linux-azure
• Ubuntu update for linux-gcp-6.17
• Ubuntu update for linux-oem-6.17
• Ubuntu update for linux-azure-fde-6.17
• Ubuntu update for linux-azure-6.17
• Ubuntu update for linux-oracle-6.17
• Ubuntu update for linux-nvidia-6.17
• Ubuntu update for linux-gcp-5.15