SB20260816475 - Improper access control in Linux kernel ieee802154

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Main Vulnerability Database SB20260816475

SB20260816475 - Improper access control in Linux kernel ieee802154

Published: August 16, 2026

Security Bulletin ID SB20260816475
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper access control (CVE-ID: CVE-2026-72049)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 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]


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.


Remediation

Install update from vendor's website.

References