SB20260727129 - Out-of-bounds read in Linux kernel rtl8723bs core driver
Published: July 27, 2026
Security Bulletin ID
SB20260727129
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-64441)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to out-of-bounds read in IE and WPS attribute parsing functions in drivers/staging/rtl8723bs/core/rtw_ieee80211.c when parsing crafted information element buffers. A local user can provide a specially crafted buffer to disclose sensitive information.
The issue affects rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr().
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344
- https://git.kernel.org/stable/c/2ea1ce30ead61589214240e8d33d96310fd613e5
- https://git.kernel.org/stable/c/4b51ee8a40fe47864197d73cc02b191de7a6b072
- https://git.kernel.org/stable/c/6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c
- https://git.kernel.org/stable/c/729c4e72563bda0f1725db1db9ea08df06f41d9b
- https://git.kernel.org/stable/c/b27ecba3196f6c14e3809595ebd69c0c2392512a
- https://git.kernel.org/stable/c/efa27d487abcdec79669a60a6d94d5d6eceb7c1d