---
id: CVE-2026-64444
title: 'staging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  staging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop

  The IE parsing loop in OnAssocRsp() advances by (pIE->length + 2) each
  iteration but only guards on i < pkt_le…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    889ca6000ac7fa73457b041848fcb08e0d51b809
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    1a52a05471494546f955a58e8c170c0c796c52d5
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    0406d746574e875d8778552eb674fcfbf5330bfb
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    0970dd47726a57e52013594e9fbf667586eb3673
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    04f612dc03427e0b1ac80a2611b5ac0ba93ac446
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    7e7741c8315e4160aead00a60cdd6f81ab880717
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    f9654207e92283e0acac5d64fe5f8835383b5a23
  - Linux 4.12
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T15:40:56.161373Z'
published: '2026-07-25'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:42:36.705Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-64444'
references:
  - url: 'https://git.kernel.org/stable/c/889ca6000ac7fa73457b041848fcb08e0d51b809'
  - url: 'https://git.kernel.org/stable/c/1a52a05471494546f955a58e8c170c0c796c52d5'
  - url: 'https://git.kernel.org/stable/c/0406d746574e875d8778552eb674fcfbf5330bfb'
  - url: 'https://git.kernel.org/stable/c/0970dd47726a57e52013594e9fbf667586eb3673'
  - url: 'https://git.kernel.org/stable/c/04f612dc03427e0b1ac80a2611b5ac0ba93ac446'
  - url: 'https://git.kernel.org/stable/c/7e7741c8315e4160aead00a60cdd6f81ab880717'
  - url: 'https://git.kernel.org/stable/c/f9654207e92283e0acac5d64fe5f8835383b5a23'
tags:
  - cve.org
epss: 0.0028
epssPercentile: 0.19083
ingestedAt: '2026-10-16T17:24:46.821Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

staging: rtl8723bs: fix OOB read in OnAssocRsp() IE loop

The IE parsing loop in OnAssocRsp() advances by (pIE->length + 2) each
iteration but only guards on i < pkt_len. When a malicious AP sends an
AssocResponse whose last IE has only one byte remaining in the frame
(the element_id byte lands at pkt_len-1), the loop reads pIE->length
from pframe[pkt_len], which is one byte past the allocated receive buffer.

Additionally, even when the header bytes are in bounds, pIE->length
itself can extend the data window beyond pkt_len, silently passing a
truncated IE to the handler functions.

Add two guards at the top of the loop body:
  1. Break if fewer than sizeof(*pIE) bytes remain (can't read header).
  2. Break if the IE's declared data extends past pkt_len.

## Affected

- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 889ca6000ac7fa73457b041848fcb08e0d51b809`
- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 1a52a05471494546f955a58e8c170c0c796c52d5`
- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 0406d746574e875d8778552eb674fcfbf5330bfb`
- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 0970dd47726a57e52013594e9fbf667586eb3673`
- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 04f612dc03427e0b1ac80a2611b5ac0ba93ac446`
- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 7e7741c8315e4160aead00a60cdd6f81ab880717`
- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < f9654207e92283e0acac5d64fe5f8835383b5a23`
- `Linux 4.12`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.