SB20260824155 - Out-of-bounds read in Linux kernel rtl8723bs os_dep driver

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Main Vulnerability Database SB20260824155

SB20260824155 - Out-of-bounds read in Linux kernel rtl8723bs os_dep driver

Published: August 24, 2026

Security Bulletin ID SB20260824155
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) Out-of-bounds read (CVE-ID: CVE-2026-74648)

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

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to disclose sensitive information or cause a denial of service.

The vulnerability exists due to out-of-bounds read in rtw_cfg80211_monitor_if_xmit_entry() when processing truncated monitor transmit frames. A local user can send a specially crafted truncated frame to disclose sensitive information or cause a denial of service.

The issue occurs after removal of the radiotap header while handling 802.11 headers and related calculated header spans.


Remediation

Install update from vendor's website.

References