Improper access control in Linux kernel - CVE-2026-72054

Vulnerability identifier: #VU143544

CSH Severity: Low

CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-72054

CWE-ID: CWE-284

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local privileged user to modify tunnel configuration across network namespaces.

The vulnerability exists due to improper access control in vti_changelink() in the ip_vti component when handling changelink requests for a tunnel whose link network namespace differs from the device network namespace. A local privileged user can send a changelink request to modify tunnel configuration across network namespaces.

The issue occurs when the device is created in or moved to a different network namespace than the one from which the request is issued.

Linux kernel
openEuler
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-tools
kernel-source
kernel-headers
kernel-devel
kernel-debugsource
kernel-debuginfo
bpftool-debuginfo
bpftool
kernel
kernel-extra-modules

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
python3-perf-debuginfo - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
python3-perf - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
perf-debuginfo - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
perf - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-tools-devel - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-tools-debuginfo - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-tools - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-source - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-headers - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-devel - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-debugsource - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-debuginfo - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
bpftool-debuginfo - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
bpftool - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel - addressed in versions 6.6.0-145.1.24.161, 6.6.0-145.3.29.160
kernel-extra-modules - update to 6.6.0-145.3.29.160

• https://git.kernel.org/stable/c/1caf737e625143c6f23c32d2b747b1a3e42e5699
• https://git.kernel.org/stable/c/32edf8aa297745226854eda2d96c0fac66c1bb15
• https://git.kernel.org/stable/c/33fd93961557ec8e3e9958995b28684c5f949394
• https://git.kernel.org/stable/c/6d8bc0dc99472d62c57c2a3d436e6ab408592bda
• https://git.kernel.org/stable/c/88b33ee458a6ca5fbef6c53b9dba772da69dab68
• https://git.kernel.org/stable/c/9571af2eec8023af9a1671b7f2cd4ab400011724
• https://git.kernel.org/stable/c/95cceadbfd52d7239bd730afdda0655287d77425
• https://git.kernel.org/stable/c/973ead9e565423642e4533e1547b5d2c0476fb03

• Improper access control in Linux kernel ipv4
• openEuler 24.03 LTS SP3 update for kernel
• openEuler 24.03 LTS SP1 update for kernel