Improper access control in Linux kernel - CVE-2026-72049

Vulnerability identifier: #VU143539

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-72049

CWE-ID: CWE-284

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to improper access control in the legacy IEEE802154_NL generic netlink LLSEC dump operations when handling LLSEC_LIST_KEY dump requests. A local user can issue a crafted generic netlink dump request to disclose sensitive information.

The issue exposes the raw 16-byte AES-128 LLSEC key bytes for any wpan netdev that has an administrator-installed LLSEC key.

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/09fd25cd8cd80a6b3edef04e53a7324d06ac2180
• https://git.kernel.org/stable/c/1905ebabe638c946aced00c4bb664da26cac56d5
• https://git.kernel.org/stable/c/3465035ba18b1ed50f8d201897d14135d20532b0
• https://git.kernel.org/stable/c/5abe94a205539d27945cda3ba43fdcfe295cf2c8
• https://git.kernel.org/stable/c/6383248058956f2a52d720b1e9f8921099cdae04
• https://git.kernel.org/stable/c/9c1e0b6d49471a712511d23fc9d06901561135e8
• https://git.kernel.org/stable/c/dffe745760f38fac0b8288e0dc4759b23d9888ff
• https://git.kernel.org/stable/c/e84708ef7521f3bffc85a449954042018abbd60e

• Improper access control in Linux kernel ieee802154
• openEuler 24.03 LTS SP3 update for kernel
• openEuler 24.03 LTS SP1 update for kernel