Integer underflow in Linux kernel - CVE-2026-53178
Published: June 26, 2026
Vulnerability identifier: #VU135603
CSH Severity: Medium
CVSS v4.0: 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
CVE-ID: CVE-2026-53178
CWE-ID: CWE-191
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to an unsigned integer underflow in rtw_mlme.c when processing wireless network information elements. A remote attacker can provide a specially crafted beacon or management frame to cause a denial of service.
The issue is in the rtl8723bs staging driver during network selection and WPS/RSN information element handling.
How to mitigate CVE-2026-53178
Install security update from vendor's repository.