Buffer overflow in Linux kernel - CVE-2026-23128

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU122946

Buffer overflow in Linux kernel - CVE-2026-23128

Published: February 16, 2026


Vulnerability identifier: #VU122946
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-2026-23128
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory corruption within the swsusp_arch_suspend() function in arch/arm64/kernel/hibernate.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
Development Tools Module
SUSE Linux Enterprise Live Patching
Public Cloud Module
Legacy Module
Basesystem Module
SUSE Real Time Module
Ubuntu
openEuler
kernel-livepatch-SLE15-SP7-RT_Update_10-debugsource
kernel-livepatch-6_4_0-150700_7_34-rt
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
linux (Ubuntu package)
linux-fips (Ubuntu package)
linux-hwe-5.15 (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-nvidia-tegra-5.15 (Ubuntu package)
linux-xilinx-zynqmp (Ubuntu package)
linux-azure (Ubuntu package)
linux-intel-iot-realtime (Ubuntu package)
linux-ibm (Ubuntu package)
linux-raspi (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-azure-5.15 (Ubuntu package)
ocfs2-kmp-rt-debuginfo
kernel-syms-rt
gfs2-kmp-rt
kernel-rt-debuginfo
kernel-rt
kernel-source-rt
kernel-devel-rt
dlm-kmp-rt
kernel-rt-devel-debuginfo
cluster-md-kmp-rt-debuginfo
kernel-rt-devel
ocfs2-kmp-rt
gfs2-kmp-rt-debuginfo
cluster-md-kmp-rt
kernel-rt-debugsource
dlm-kmp-rt-debuginfo
kernel-azure
kernel-azure-debugsource
kernel-azure-debuginfo
kernel-azure-devel
kernel-azure-devel-debuginfo
ocfs2-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
reiserfs-kmp-default
kernel-64kb
kernel-64kb-devel
kernel-64kb-debugsource
kernel-64kb-devel-debuginfo
kernel-64kb-debuginfo
kernel-default
kernel-default-debugsource
kernel-default-devel-debuginfo
kernel-default-debuginfo
kernel-default-devel
kernel-macros
kernel-devel
kernel-syms
kernel-source
reiserfs-kmp-default-debuginfo
kernel-obs-build-debugsource
kernel-obs-build
kernel-docs
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-zfcpdump
kernel-default-base
kernel
bpftool
kernel-tools-debuginfo
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-headers
kernel-tools
kernel-tools-devel
perf
perf-debuginfo
python3-perf
python3-perf-debuginfo
kernel-extra-modules
linux-nvidia (Ubuntu package)
linux-nvidia-6.8 (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)

How to mitigate CVE-2026-23128

Install update from vendor's repository.

kernel-livepatch-SLE15-SP7-RT_Update_10-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_34-rt - 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
linux (Ubuntu package) - addressed in versions 5.15.0.175.148, 5.15.0-175.185, 5.15.0-175.185~20.04.1, 5.15.0.176.161, 5.15.0-176.186, 5.15.0.1088.87, 5.15.0-1088.96, 5.15.0.1100.100, 5.15.0-1100.101, 5.15.0.1101.100, 5.15.0-1101.107~20.04.1, 5.15.0.1102.98, 5.15.0-1102.108, 5.15.0.1105.101, 5.15.0.1105.108, 5.15.0-1105.112, 5.15.0-1105.112~20.04.1, 5.15.0-1105.114, 6.8.0-117.117, 6.8.0-117.117.1, 6.8.0-117.117.1~22.04.1, 6.8.0-1041.44, 6.8.0-1054.60, 6.8.0-1055.56, 6.8.0-1055.56~22.04.1, 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, 6.8.1-1051.52~22.04.1
linux-fips (Ubuntu package) - addressed in versions 5.15.0.176.102, 5.15.0-176.186+fips1, 5.15.0.1105.95, 5.15.0-1105.114+fips1, 6.8.0-116.116+fips1
linux-hwe-5.15 (Ubuntu package) - update to 5.15.0-176.186~20.04.1
linux-nvidia-tegra (Ubuntu package) - addressed in versions 5.15.0-1046.46+1, 5.15.0.1046.48, 5.15.0-1057.57, 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 5.15.0.1070.73, 5.15.0-1070.74
linux-azure (Ubuntu package) - addressed in versions 5.15.0.1097.93, 5.15.0-1097.102, 5.15.0.1100.99, 5.15.0-1100.106, 5.15.0-1100.106~20.04.1, 5.15.0-1102.108~20.04.1, 5.15.0.1110.108, 5.15.0-1110.119, 6.8.0-1056.62
linux-intel-iot-realtime (Ubuntu package) - addressed in versions 5.15.0-1097.99, 5.15.0.1097.101, 5.15.0.1104.108, 5.15.0-1104.113
linux-ibm (Ubuntu package) - addressed in versions 5.15.0.1099.95, 5.15.0-1099.102, 5.15.0-1099.102~20.04.1
linux-raspi (Ubuntu package) - addressed in versions 5.15.0.1099.97, 5.15.0-1099.102
linux-azure-fips (Ubuntu package) - addressed in versions 5.15.0.1110.95, 5.15.0-1110.119+fips1
linux-azure-5.15 (Ubuntu package) - update to 5.15.0-1110.119~20.04.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.34.1
kernel-syms-rt - update to 6.4.0-150700.7.34.1
gfs2-kmp-rt - update to 6.4.0-150700.7.34.1
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
dlm-kmp-rt - update to 6.4.0-150700.7.34.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.34.1
cluster-md-kmp-rt-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
cluster-md-kmp-rt - update to 6.4.0-150700.7.34.1
kernel-rt-debugsource - update to 6.4.0-150700.7.34.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.34.1
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
ocfs2-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
reiserfs-kmp-default - 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
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-default-devel - update to 6.4.0-150700.53.34.1
kernel-macros - update to 6.4.0-150700.53.34.1
kernel-devel - 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
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.34.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.34.1
kernel-obs-build - update to 6.4.0-150700.53.34.1
kernel-docs - update to 6.4.0-150700.53.34.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.34.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.34.1
kernel-zfcpdump - 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
kernel - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
bpftool - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
kernel-tools-debuginfo - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
bpftool-debuginfo - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
kernel-debuginfo - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
kernel-debugsource - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
kernel-devel - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
kernel-headers - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
kernel-source - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
kernel-tools - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
kernel-tools-devel - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
perf - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
perf-debuginfo - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
python3-perf - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
python3-perf-debuginfo - addressed in versions 6.6.0-143.0.0.125, 6.6.0-143.0.0.137, 6.6.0-143.0.0.138
kernel-extra-modules - update to 6.6.0-143.0.0.138
linux-nvidia (Ubuntu package) - addressed in versions 6.8.0-1054.57, 6.8.0-1054.57.1
linux-nvidia-6.8 (Ubuntu package) - update to 6.8.0-1054.57~22.04.1
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

External References

Related Security Bulletins