SB20260508139 - Out-of-bounds read in Linux kernel rtl8723bs core driver
Published: May 8, 2026
Security Bulletin ID
SB20260508139
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote 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-2026-43387)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in rtw_get_ie_ex() when parsing untrusted frame data. A remote attacker can send a specially crafted frame to disclose sensitive information.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/35969c3a208a07cb8642301df5869c34e2db7071
- https://git.kernel.org/stable/c/6d62fa548387e159a21ea95132c09bfc96d336ed
- https://git.kernel.org/stable/c/740bca8bbdb707c0e4bb11e3316deb2f04fc7ce1
- https://git.kernel.org/stable/c/8097a48c606a9306281ea7bd73bf2afc97553733
- https://git.kernel.org/stable/c/821f7d759fb2de33c5e5b0c4981181c4d0c3e9b1
- https://git.kernel.org/stable/c/9a4cd4c37593cc8b8d28f9a6732b490a8032006a
- https://git.kernel.org/stable/c/ac38856092b4c994f94343251b30520bdeb7f475
- https://git.kernel.org/stable/c/f0109b9d3e1e455429279d602f6276e34689750a