Use-after-free in Linux kernel - CVE-2025-68800

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Main Vulnerability Database Vulnerabilities #VU121379

Use-after-free in Linux kernel - CVE-2025-68800

Published: January 14, 2026


Vulnerability identifier: #VU121379
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-2025-68800
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to a use-after-free error within the mlxsw_sp_mr_route_add() function in drivers/net/ethernet/mellanox/mlxsw/spectrum_mr.c. A local user can escalate privileges on the system.


Affected software

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 Desktop 15
SUSE Linux Enterprise High Availability Extension 15
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Anolis OS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Legacy Module
SUSE Linux Enterprise Live Patching
Development Tools Module
Basesystem Module
Public Cloud Module
SUSE Real Time Module
Ubuntu
openEuler
IBM Qradar SIEM
Juniper Secure Analytics (JSA)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kernel-livepatch-SLE15-SP7-RT_Update_9-debugsource
kernel-livepatch-6_4_0-150700_7_31-rt
kernel-livepatch-6_4_0-150700_7_31-rt-debuginfo
kernel-livepatch-6_4_0-150700_53_31-default-debuginfo
kernel-livepatch-SLE15-SP7_Update_9-debugsource
kernel-livepatch-6_4_0-150700_53_31-default
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-tools
kernel-doc
kernel-abi-stablelists
python3-perf
perf
kernel-tools-libs-devel
bpftool
kernel
kernel-core
kernel-cross-headers
kernel-debug
kernel-debug-core
kernel-debug-devel
kernel-debug-modules
kernel-debug-modules-extra
kernel-devel
kernel-headers
kernel-modules
kernel-modules-extra
kernel-tools-libs
python3-perf-debuginfo
perf-debuginfo
kernel-tools-devel
kernel-tools-debuginfo
kernel-source
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
linux-aws-fips (Ubuntu package)
linux (Ubuntu package)
linux-aws-5.15 (Ubuntu package)
linux-nvidia-tegra-igx (Ubuntu package)
linux-intel-iot-realtime (Ubuntu package)
linux-raspi (Ubuntu package)
linux-realtime (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-5.15 (Ubuntu package)
linux (Debian package)
kernel-devel-rt
kernel-source-rt
kernel-syms-rt
kernel-rt
cluster-md-kmp-rt
kernel-rt-devel
gfs2-kmp-rt
dlm-kmp-rt-debuginfo
ocfs2-kmp-rt-debuginfo
kernel-rt-debuginfo
gfs2-kmp-rt-debuginfo
ocfs2-kmp-rt
cluster-md-kmp-rt-debuginfo
kernel-rt-debugsource
kernel-rt-devel-debuginfo
dlm-kmp-rt
kernel-devel-azure
kernel-source-azure
kernel-azure-devel-debuginfo
kernel-azure-debugsource
kernel-syms-azure
kernel-azure-devel
kernel-azure-debuginfo
kernel-azure
kernel-macros
kernel-default-debugsource
kernel-default
kernel-64kb-devel
kernel-64kb-devel-debuginfo
kernel-64kb-debugsource
kernel-64kb-debuginfo
kernel-64kb
kernel-default-devel-debuginfo
kernel-default-debuginfo
kernel-zfcpdump
kernel-zfcpdump-debuginfo
kernel-zfcpdump-debugsource
kernel-docs
kernel-obs-build-debugsource
kernel-obs-build
kernel-syms
reiserfs-kmp-default-debuginfo
reiserfs-kmp-default
ocfs2-kmp-default
dlm-kmp-default
cluster-md-kmp-default-debuginfo
ocfs2-kmp-default-debuginfo
gfs2-kmp-default
gfs2-kmp-default-debuginfo
cluster-md-kmp-default
dlm-kmp-default-debuginfo
kernel-default-extra-debuginfo
kernel-default-extra
kernel-default-livepatch
kernel-default-devel
kernel-default-livepatch-devel
kernel-default-base
kernel-extra-modules
linux-hwe-6.8 (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-xilinx (Ubuntu package)
linux-oracle (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-nvidia-lowlatency (Ubuntu package)
linux-gcp-6.8 (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-aws (Ubuntu package)
linux-realtime-6.17 (Ubuntu package)
linux-gcp (Ubuntu package)

How to mitigate CVE-2025-68800

Install update from vendor's repository.

IBM Qradar SIEM - update to 7.5.0 Update Pack 15 IF01
Juniper Secure Analytics (JSA) - update to 7.5.0 UP15 IF01
kernel-livepatch-SLE15-SP7-RT_Update_9-debugsource - update to 1-150700.1.3.2
kernel-livepatch-6_4_0-150700_7_31-rt - update to 1-150700.1.3.2
kernel-livepatch-6_4_0-150700_7_31-rt-debuginfo - update to 1-150700.1.3.2
kernel-livepatch-6_4_0-150700_53_31-default-debuginfo - update to 1-150700.15.3.1
kernel-livepatch-SLE15-SP7_Update_9-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_31-default - update to 1-150700.15.3.1
kernel (Red Hat package) - addressed in versions 4.18.0-305.194.1.el8_4, 4.18.0-372.196.1.el8_6, 4.18.0-477.147.1.el8_8, 4.18.0-553.107.1.el8_10, 5.14.0-284.166.1.el9_2, 6.12.0-124.39.1.el10_1
kernel-rt (Red Hat package) - addressed in versions 4.18.0-553.107.1.rt7.448.el8_10, 5.14.0-284.166.1.rt14.451.el9_2
kernel-tools - update to 4.18.0-553.107.1.0.1
kernel-doc - update to 4.18.0-553.107.1.0.1
kernel-abi-stablelists - update to 4.18.0-553.107.1.0.1
python3-perf - update to 4.18.0-553.107.1.0.1
perf - update to 4.18.0-553.107.1.0.1
kernel-tools-libs-devel - update to 4.18.0-553.107.1.0.1
bpftool - update to 4.18.0-553.107.1.0.1
kernel - update to 4.18.0-553.107.1.0.1
kernel-core - update to 4.18.0-553.107.1.0.1
kernel-cross-headers - update to 4.18.0-553.107.1.0.1
kernel-debug - update to 4.18.0-553.107.1.0.1
kernel-debug-core - update to 4.18.0-553.107.1.0.1
kernel-debug-devel - update to 4.18.0-553.107.1.0.1
kernel-debug-modules - update to 4.18.0-553.107.1.0.1
kernel-debug-modules-extra - update to 4.18.0-553.107.1.0.1
kernel-devel - update to 4.18.0-553.107.1.0.1
kernel-headers - update to 4.18.0-553.107.1.0.1
kernel-modules - update to 4.18.0-553.107.1.0.1
kernel-modules-extra - update to 4.18.0-553.107.1.0.1
kernel-tools-libs - update to 4.18.0-553.107.1.0.1
bpftool - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
kernel - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
python3-perf-debuginfo - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
python3-perf - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
perf-debuginfo - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
perf - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
kernel-tools-devel - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
kernel-tools-debuginfo - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
kernel-tools - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
kernel-source - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
kernel-headers - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
kernel-devel - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
kernel-debugsource - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
kernel-debuginfo - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
bpftool-debuginfo - addressed in versions 5.10.0-299.0.0.202, 6.6.0-138.0.0.119, 6.6.0-138.0.0.132
linux-aws-fips (Ubuntu package) - addressed in versions 5.15.0.173.100, 5.15.0-173.183+fips1, 5.15.0.1103.93, 5.15.0.1103.99, 5.15.0-1103.110+fips1, 5.15.0-1103.112+fips1, 6.8.0-110.110+fips2, 6.8.0-1052.55+fips1, 6.8.0-1054.57+fips1
linux (Ubuntu package) - addressed in versions 5.15.0.173.146, 5.15.0.173.161, 5.15.0-173.183, 5.15.0-1055.55, 5.15.0-1055.55~20.04.1, 5.15.0.1067.70, 5.15.0-1067.71, 5.15.0.1086.85, 5.15.0-1086.94, 5.15.0.1095.91, 5.15.0-1095.100, 5.15.0.1097.93, 5.15.0.1097.100, 5.15.0-1097.100~20.04.1, 5.15.0.1098.98, 5.15.0-1098.99, 5.15.0-1098.104, 5.15.0.1100.96, 5.15.0-1100.106, 5.15.0.1103.99, 5.15.0.1103.106, 5.15.0-1103.110, 5.15.0-1103.112~20.04.1, 6.8.0-110.110, 6.8.0-110.110.1, 6.8.0-110.110.1~22.04.1, 6.8.0-1037.40, 6.8.0-1050.56, 6.8.0-1051.51, 6.8.0-1052.55~22.04.1, 6.8.0-1054.57, 6.17.0-22.22, 6.17.0-1010.11
linux-aws-5.15 (Ubuntu package) - addressed in versions 5.15.0-173.183~20.04.1, 5.15.0-1098.104~20.04.1, 5.15.0.1099.98, 5.15.0-1099.105, 5.15.0-1100.106~20.04.1, 5.15.0-1103.110~20.04.1, 5.15.0-1103.112~20.04.1
linux-nvidia-tegra-igx (Ubuntu package) - addressed in versions 5.15.0-1044.44, 5.15.0.1044.46
linux-intel-iot-realtime (Ubuntu package) - addressed in versions 5.15.0-1094.96, 5.15.0.1094.98
linux-raspi (Ubuntu package) - addressed in versions 5.15.0.1097.95, 5.15.0-1097.100, 6.17.0-1014.14
linux-realtime (Ubuntu package) - addressed in versions 5.15.0.1102.106, 5.15.0-1102.111, 6.8.1-1047.48
linux-azure-fips (Ubuntu package) - addressed in versions 5.15.0.1109.94, 5.15.0-1109.118+fips1, 6.8.0-1054.60+fips1
linux-azure (Ubuntu package) - addressed in versions 5.15.0.1109.107, 5.15.0-1109.118, 6.8.0-1054.60, 6.17.0-1013.13, 6.17.0-1013.13~24.04.1, 6.17.0-1020.20
linux-azure-5.15 (Ubuntu package) - update to 5.15.0-1110.119~20.04.1
linux (Debian package) - addressed in versions 6.1.162-1, 6.12.69-1
kernel-devel-rt - update to 6.4.0-150700.7.31.1
kernel-source-rt - update to 6.4.0-150700.7.31.1
kernel-syms-rt - update to 6.4.0-150700.7.31.1
kernel-rt - update to 6.4.0-150700.7.31.2
cluster-md-kmp-rt - update to 6.4.0-150700.7.31.2
kernel-rt-devel - update to 6.4.0-150700.7.31.2
gfs2-kmp-rt - update to 6.4.0-150700.7.31.2
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
kernel-rt-debuginfo - update to 6.4.0-150700.7.31.2
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
ocfs2-kmp-rt - update to 6.4.0-150700.7.31.2
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.31.2
kernel-rt-debugsource - update to 6.4.0-150700.7.31.2
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.31.2
dlm-kmp-rt - update to 6.4.0-150700.7.31.2
kernel-devel-azure - update to 6.4.0-150700.20.27.1
kernel-source-azure - update to 6.4.0-150700.20.27.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.20.27.1
kernel-azure-debugsource - update to 6.4.0-150700.20.27.1
kernel-syms-azure - update to 6.4.0-150700.20.27.1
kernel-azure-devel - update to 6.4.0-150700.20.27.1
kernel-azure-debuginfo - update to 6.4.0-150700.20.27.1
kernel-azure - update to 6.4.0-150700.20.27.1
kernel-macros - update to 6.4.0-150700.53.31.1
kernel-default-debugsource - update to 6.4.0-150700.53.31.1
kernel-default - update to 6.4.0-150700.53.31.1
kernel-64kb-devel - update to 6.4.0-150700.53.31.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.31.1
kernel-64kb-debugsource - update to 6.4.0-150700.53.31.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.31.1
kernel-64kb - update to 6.4.0-150700.53.31.1
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.31.1
kernel-default-debuginfo - update to 6.4.0-150700.53.31.1
kernel-devel - update to 6.4.0-150700.53.31.1
kernel-zfcpdump - update to 6.4.0-150700.53.31.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.31.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.31.1
kernel-docs - update to 6.4.0-150700.53.31.1
kernel-obs-build-debugsource - update to 6.4.0-150700.53.31.1
kernel-obs-build - update to 6.4.0-150700.53.31.1
kernel-syms - update to 6.4.0-150700.53.31.1
kernel-source - update to 6.4.0-150700.53.31.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
reiserfs-kmp-default - update to 6.4.0-150700.53.31.1
ocfs2-kmp-default - update to 6.4.0-150700.53.31.1
dlm-kmp-default - update to 6.4.0-150700.53.31.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
gfs2-kmp-default - update to 6.4.0-150700.53.31.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
cluster-md-kmp-default - update to 6.4.0-150700.53.31.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.31.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.31.1
kernel-default-extra - update to 6.4.0-150700.53.31.1
kernel-default-livepatch - update to 6.4.0-150700.53.31.1
kernel-default-devel - update to 6.4.0-150700.53.31.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.31.1
kernel-default-base - update to 6.4.0-150700.53.31.1.150700.17.21.1
kernel-extra-modules - update to 6.6.0-138.0.0.132
linux-hwe-6.8 (Ubuntu package) - addressed in versions 6.8.0-110.110~22.04.1, 6.8.0-1051.51~22.04.1, 6.8.0-1052.56
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1022.22
linux-xilinx (Ubuntu package) - update to 6.8.0-1029.30
linux-oracle (Ubuntu package) - addressed in versions 6.8.0-1049.50, 6.8.0-1049.50~22.04.1
linux-nvidia (Ubuntu package) - addressed in versions 6.8.0-1051.54, 6.8.0-1051.54~22.04.1
linux-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1051.54.1
linux-gcp-6.8 (Ubuntu package) - update to 6.8.0-1054.57~22.04.1
linux-raspi-realtime (Ubuntu package) - update to 6.8.0-2042.43
linux-aws (Ubuntu package) - addressed in versions 6.17.0-22.22~24.04.1, 6.17.0-1011.11, 6.17.0-1011.11~24.04.1, 6.17.0-1012.12, 6.17.0-1012.12~24.04.1
linux-realtime-6.17 (Ubuntu package) - update to 6.17.0-1010.11~24.04.1
linux-gcp (Ubuntu package) - addressed in versions 6.17.0-1012.12, 6.17.0-1012.12~24.04.1

External References

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