SB2026032572 - Use of Uninitialized Variable in Linux kernel wireless

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026032572

SB2026032572 - Use of Uninitialized Variable in Linux kernel wireless

Published: March 25, 2026

Security Bulletin ID SB2026032572
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use of Uninitialized Variable (CVE-ID: CVE-2026-23367)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: 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/E:U/U:Clear


The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to improper initialization in the radiotap parser component when processing radiotap headers with undefined fields. A local user can provide a specially crafted radiotap header containing undefined field 18 to trigger uninitialized memory access and potentially execute arbitrary code.

The issue arises because iterator->_next_ns_data is not initialized when handling undefined fields in the standard radiotap namespace, leading to use of uninitialized data during subsequent checks.


Remediation

Install update from vendor's website.

References