---
id: CVE-2025-68256
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser

  The Information Element (IE) parser rtw_get_ie() trusted the length
  byte of each IE without validatin…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser

  The Information Element (IE) parser rtw_get_ie() trusted the length
  byte of each IE without validatin…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
published: '2025-12-16'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-68256'
references:
  - url: 'https://git.kernel.org/stable/c/154828bf9559b9c8421fc2f0d7f7f76b3683aaed'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/30c558447e90935f0de61be181bbcedf75952e00'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9829c6e1b2e4180fd18315252ad6faeab6128076'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a54e2b2db1b7de2e008b4f62eec35aaefcc663c5'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/b977eb31802817f4a37da95bf16bfdaa1eeb5fc2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c0d93d69e1472ba75b78898979b90a98ba2a2501'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/df191dd9f4c7249d98ada55634fa8ac19089b8cb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00273
epssPercentile: 0.18255
ingestedAt: '2026-10-14T13:30:58.468Z'
---

## Overview

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

staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser

The Information Element (IE) parser rtw_get_ie() trusted the length
byte of each IE without validating that the IE body (len bytes after
the 2-byte header) fits inside the remaining frame buffer. A malformed
frame can advertise an IE length larger than the available data, causing
the parser to increment its pointer beyond the buffer end. This results
in out-of-bounds reads or, depending on the pattern, an infinite loop.

Fix by validating that (offset + 2 + len) does not exceed the limit
before accepting the IE or advancing to the next element.

This prevents OOB reads and ensures the parser terminates safely on
malformed frames.

## Remediation

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