Improper locking in Linux kernel - CVE-2025-38324

Vulnerability identifier: #VU112785

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-2025-38324

CWE-ID: CWE-667

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 locking within the mpls_route_input_rcu() function in net/mpls/af_mpls.c. A local user can perform a denial of service (DoS) attack.

Linux kernel
Debian Linux
openEuler
Ubuntu
Anolis OS
python3-perf
kernel-tools-debuginfo
kernel-tools-devel
kernel
perf
kernel-tools
perf-debuginfo
python2-perf
python2-perf-debuginfo
python3-perf-debuginfo
kernel-source
kernel-devel
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel-headers
linux-aws-fips (Ubuntu package)
linux (Ubuntu package)
linux-nvidia-tegra-igx (Ubuntu package)
linux-intel-iot-realtime (Ubuntu package)
linux-kvm (Ubuntu package)
linux-oracle-5.15 (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-azure (Ubuntu package)
linux-azure-5.15 (Ubuntu package)
linux (Debian package)
kernel-extra-modules
kernel-debug-devel
kernel-tools-libs
kernel-tools-libs-devel
kernel-64k
kernel-64k-debug
kernel-64k-debug-devel
kernel-64k-devel
kernel-debug
linux-lowlatency (Ubuntu package)
linux-hwe-6.8 (Ubuntu package)
linux-xilinx (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-ibm (Ubuntu package)
linux-nvidia-lowlatency (Ubuntu package)
linux-gcp-fips (Ubuntu package)
linux-gcp-6.8 (Ubuntu package)
linux-azure-6.8 (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-realtime-6.8 (Ubuntu package)
linux-hwe-6.14 (Ubuntu package)
linux-realtime-6.14 (Ubuntu package)
linux-aws-6.14 (Ubuntu package)
linux-gcp-6.14 (Ubuntu package)

Install update from vendor's repository.

python3-perf - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
kernel-tools-debuginfo - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
kernel-tools-devel - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
kernel - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
perf - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
kernel-tools - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
perf-debuginfo - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
python2-perf - update to 4.19.90-2507.4.0.0337
python2-perf-debuginfo - update to 4.19.90-2507.4.0.0337
python3-perf-debuginfo - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
kernel-source - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
kernel-devel - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
kernel-debugsource - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
kernel-debuginfo - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
bpftool-debuginfo - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
bpftool - addressed in versions 4.19.90-2507.4.0.0337, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
kernel-headers - addressed in versions 5.10.0-275.0.0.177, 5.10.0-275.0.0.178, 6.6.0-103.0.0.95, 6.6.0-103.0.0.106, 6.6.0-103.0.0.109
linux-aws-fips (Ubuntu package) - addressed in versions 5.15.0.156.89, 5.15.0-156.166+fips1, 5.15.0.1092.82, 5.15.0.1092.88, 5.15.0-1092.99+fips1, 5.15.0-1092.101+fips1, 6.8.0-100.100+fips1, 6.8.0-1046.49+fips1
linux (Ubuntu package) - addressed in versions 5.15.0.156.135, 5.15.0.156.154, 5.15.0-156.166, 5.15.0-156.166~20.04.1, 5.15.0.156.166~20.04.1, 5.15.0-1045.45, 5.15.0.1045.45, 5.15.0.1045.45~20.04.1, 5.15.0-1045.45~20.04.1, 5.15.0.1056.59, 5.15.0-1056.60, 5.15.0.1075.74, 5.15.0-1075.83, 5.15.0.1086.82, 5.15.0.1086.84, 5.15.0-1086.89, 5.15.0.1086.89~20.04.1, 5.15.0-1086.89~20.04.1, 5.15.0.1087.87, 5.15.0-1087.88, 5.15.0-1087.91~20.04.1, 5.15.0.1087.91~20.04.1, 5.15.0-1087.93, 5.15.0.1087.93~20.04.1, 5.15.0-1087.93~20.04.1, 5.15.0.1089.88, 5.15.0-1089.95, 5.15.0.1090.86, 5.15.0-1090.96, 5.15.0.1092.88, 5.15.0.1092.95, 5.15.0-1092.99, 5.15.0-1092.99~20.04.1, 5.15.0.1092.99~20.04.1, 5.15.0-1092.101, 5.15.0-1092.101~20.04.1, 5.15.0.1092.101~20.04.1, 6.8.0-100.100, 6.8.0-1047.51, 6.14.0-34.34, 6.14.0-1014.14~24.04.1, 6.14.0-1015.15, 6.14.0-1015.15~24.04.1, 6.14.0-1016.16, 6.14.0-1018.19
linux-nvidia-tegra-igx (Ubuntu package) - addressed in versions 5.15.0-1034.34, 5.15.0.1034.36
linux-intel-iot-realtime (Ubuntu package) - addressed in versions 5.15.0-1085.87, 5.15.0.1085.89, 5.15.0.1092.96, 5.15.0-1092.101
linux-kvm (Ubuntu package) - addressed in versions 5.15.0.1088.84, 5.15.0-1088.93
linux-oracle-5.15 (Ubuntu package) - addressed in versions 5.15.0-1090.96~20.04.1, 5.15.0.1090.96~20.04.1
linux-azure-fips (Ubuntu package) - addressed in versions 5.15.0.1096.81, 5.15.0-1096.105+fips1, 6.8.0-1046.52+fips1
linux-azure (Ubuntu package) - addressed in versions 5.15.0.1096.94, 5.15.0-1096.105, 6.8.0-1046.52, 6.14.0-1007.7+25.10.1, 6.14.0-1014.14, 6.14.0-1014.14~24.04.1
linux-azure-5.15 (Ubuntu package) - addressed in versions 5.15.0-1096.105~20.04.1, 5.15.0.1096.105~20.04.1
linux (Debian package) - update to 6.1.147-1
kernel-extra-modules - update to 6.6.0-103.0.0.109
kernel-debug-devel - update to 6.6.102-5
kernel-devel - update to 6.6.102-5
kernel-headers - update to 6.6.102-5
kernel-tools - update to 6.6.102-5
kernel-tools-libs - update to 6.6.102-5
kernel-tools-libs-devel - update to 6.6.102-5
perf - update to 6.6.102-5
python3-perf - update to 6.6.102-5
kernel-64k - update to 6.6.102-5
kernel-64k-debug - update to 6.6.102-5
kernel-64k-debug-devel - update to 6.6.102-5
kernel-64k-devel - update to 6.6.102-5
kernel - update to 6.6.102-5
bpftool - update to 6.6.102-5
kernel-debug - update to 6.6.102-5
linux-lowlatency (Ubuntu package) - update to 6.8.0-100.100.1
linux-hwe-6.8 (Ubuntu package) - addressed in versions 6.8.0-100.100.1~22.04.1, 6.8.0-100.100~22.04.1
linux-xilinx (Ubuntu package) - addressed in versions 6.8.0.1023.24, 6.8.0-1023.24
linux-aws (Ubuntu package) - addressed in versions 6.8.0-1030.33, 6.8.0-1043.44, 6.8.0-1043.44~22.04.1, 6.8.0-1046.49~22.04.1
linux-gcp (Ubuntu package) - addressed in versions 6.8.0-1043.48, 6.8.0-1047.50~22.04.2
linux-ibm (Ubuntu package) - addressed in versions 6.8.0-1044.44, 6.8.0-1044.44~22.04.1
linux-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1046.49.1
linux-gcp-fips (Ubuntu package) - update to 6.8.0-1047.50+fips1
linux-gcp-6.8 (Ubuntu package) - update to 6.8.0-1047.50~22.04.2
linux-azure-6.8 (Ubuntu package) - update to 6.8.0-1051.57~22.04.1
linux-raspi-realtime (Ubuntu package) - addressed in versions 6.8.0-2037.38, 6.8.1-1041.42
linux-realtime-6.8 (Ubuntu package) - update to 6.8.1-1041.42~22.04.1
linux-hwe-6.14 (Ubuntu package) - update to 6.14.0-34.34~24.04.1
linux-realtime-6.14 (Ubuntu package) - update to 6.14.0-1014.14~24.04.1
linux-aws-6.14 (Ubuntu package) - update to 6.14.0-1015.15~24.04.1
linux-gcp-6.14 (Ubuntu package) - update to 6.14.0-1018.19~24.04.1

• https://git.kernel.org/stable/c/2919297b18e5a5fb7e643f9e32c12c0b17cce1be
• https://git.kernel.org/stable/c/36af82f25fbdcd719eb947c15ea874bf80bcf229
• https://git.kernel.org/stable/c/49b8a9d7d44401a186e20b1aaf591d2e62727aeb
• https://git.kernel.org/stable/c/517bc6836ee9fcffe2539f6f6aa3fdd9c7a7ae73
• https://git.kernel.org/stable/c/6dbb0d97c5096072c78a6abffe393584e57ae945
• https://git.kernel.org/stable/c/a060781640012d5d5105072f4c44ed6ad6830ef9
• https://git.kernel.org/stable/c/d8cd847fb8626872631cc22d44be5127b4ebfb74
• https://git.kernel.org/stable/c/f19cbd84e645e39bc3228e1191bb151ef0ffac8c

• Improper locking in Linux kernel mpls
• openEuler 24.03 LTS SP2 update for kernel
• openEuler 24.03 LTS SP1 update for kernel
• openEuler 24.03 LTS update for kernel
• openEuler 22.03 LTS SP4 update for kernel
• openEuler 22.03 LTS SP3 update for kernel
• openEuler 20.03 LTS SP4 update for kernel
• Debian update for linux
• Ubuntu update for linux
• Ubuntu update for linux-azure-fips
• Ubuntu update for linux-intel-iot-realtime
• Ubuntu update for linux-aws-fips
• Ubuntu update for linux-oracle-5.15
• Ubuntu update for linux-azure
• Ubuntu update for linux-azure-5.15
• Ubuntu update for linux-kvm
• Ubuntu update for linux-nvidia-tegra-igx
• Ubuntu update for linux-realtime-6.14
• Ubuntu update for linux-azure
• Ubuntu update for linux
• Anolis OS update for kernel:6.6
• Ubuntu update for linux-aws-6.14
• Ubuntu update for linux-gcp-6.14
• Ubuntu update for linux-hwe-6.14
• Ubuntu update for linux
• Ubuntu update for linux-realtime-6.8
• Ubuntu update for linux-gcp-6.8
• Ubuntu update for linux-aws-fips
• Ubuntu update for linux-raspi-realtime
• Ubuntu update for linux-aws
• Ubuntu update for linux-gcp-fips
• Ubuntu update for linux-hwe-6.8
• Ubuntu update for linux-lowlatency
• Ubuntu update for linux-gcp
• Ubuntu update for linux-nvidia-lowlatency
• Ubuntu update for linux-xilinx
• Ubuntu update for linux-ibm
• Ubuntu update for linux-azure-fips
• Ubuntu update for linux-azure
• Ubuntu update for linux-azure-6.8