SB20260727130 - Out-of-bounds read in Linux kernel rtl8723bs core driver

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Main Vulnerability Database SB20260727130

SB20260727130 - Out-of-bounds read in Linux kernel rtl8723bs core driver

Published: July 27, 2026

Security Bulletin ID SB20260727130
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-64442)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to out-of-bounds read in IE parsing loops in issue_assocreq() and join_cmd_hdl() when processing AP beacon and probe-response frames with a truncated final information element. A remote attacker can send a malicious AP beacon or probe-response frame with a truncated final information element to cause a denial of service.

The issue is triggered when the stored IE data ends with an element_id byte without a following length byte.


Remediation

Install update from vendor's website.

References