---
id: CVE-2026-64536
title: >-
  kernel: staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop
  (CVE-2026-64536)
summary: >-
  A flaw was found in the Linux kernel rtl8723bs staging Wi-Fi driver.
  is_ap_in_tkip() reads an information-element header and its vendor or RSN
  payload without checking that those bytes remain in the buffer, so a truncated
  element causes an…
severity: low
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
cwe: CWE-125
vendor: Red Hat
product: Linux
affected:
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    d2055332297e24c63fffda943ef7a5eefc0a6019
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    6f26cc55affd9d7f88ae2f5d12db4ecf9072c209
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    204b22c8df115370037248859bf0fa62db73a396
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    4380b3860d887a13555ff024a58dfc05b490dfd6
  - >-
    Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b <
    3bf39f711ff27c64be8680a8938bcc5001982e81
  - Linux 4.12
published: '2026-07-27'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T23:44:52+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64536.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64536.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-64536'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2507403'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-64536'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64536'
  - url: >-
      https://lore.kernel.org/linux-cve-announce/2026072757-CVE-2026-64536-3376@gregkh/T
  - url: 'https://git.kernel.org/stable/c/ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7'
  - url: 'https://git.kernel.org/stable/c/d2055332297e24c63fffda943ef7a5eefc0a6019'
  - url: 'https://git.kernel.org/stable/c/6f26cc55affd9d7f88ae2f5d12db4ecf9072c209'
  - url: 'https://git.kernel.org/stable/c/204b22c8df115370037248859bf0fa62db73a396'
  - url: 'https://git.kernel.org/stable/c/a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395'
  - url: 'https://git.kernel.org/stable/c/4380b3860d887a13555ff024a58dfc05b490dfd6'
  - url: 'https://git.kernel.org/stable/c/3bf39f711ff27c64be8680a8938bcc5001982e81'
tags:
  - csaf
  - vex
  - red-hat
  - cve.org
epss: 0.00259
epssPercentile: 0.17456
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-16T15:41:58.313988Z'
ingestedAt: '2026-10-16T17:24:46.827Z'
---

## Overview

A flaw was found in the Linux kernel rtl8723bs staging Wi-Fi driver. is_ap_in_tkip() reads an information-element header and its vendor or RSN payload without checking that those bytes remain in the buffer, so a truncated element causes an out-of-bounds read.

## Vendor advisories

- **Red Hat VEX** · Low · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64536.json)

**kernel: staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop** — rated Low by Red Hat. Released 2026-07-27, updated 2026-10-19.

Not affected:

- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9

## Remediation

Refer to the advisory for fix availability.