Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2026-64536

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
27/07/2026
Last modified:
30/07/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop<br /> <br /> The loop in is_ap_in_tkip() iterates over IEs without verifying that<br /> enough bytes remain before dereferencing the IE header or its payload:<br /> <br /> - pIE-&gt;element_id and pIE-&gt;length are read without checking that<br /> i + sizeof(*pIE) data + 12,<br /> which requires pIE-&gt;length &gt;= 16. For WLAN_EID_RSN it compares<br /> pIE-&gt;data + 8, requiring pIE-&gt;length &gt;= 12. Neither requirement<br /> is checked.<br /> <br /> Add the missing IE header and payload bounds checks and guard each<br /> data access with an explicit pIE-&gt;length minimum, matching the<br /> pattern established in update_beacon_info().

Impact

Vector 3.x
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.10 HIGH
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): High

Base Score 3.x
8.10
Severity 3.x
HIGH

References to Advisories, Solutions, and Tools