---
title: "CVE-2026-90017: Linux kernel rtl8723bs - Out-of-Bounds Read"
description: "Linux kernel staging rtl8723bs contains an out-of-bounds read caused by missing length check in rtw_action_frame_parse(), letting attackers cause memory read beyond buffer, exploit requires sending a short management action frame."
url: https://panop.io/threat-heartbeat/CVE-2026-90017/
---

# CVE-2026-90017 Linux kernel rtl8723bs - Out-of-Bounds Read

Linux kernel staging rtl8723bs contains an out-of-bounds read caused by missing length check in rtw\_action\_frame\_parse(), letting attackers cause memory read beyond buffer, exploit requires sending a short management action frame.

CVSS base score 7.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.40% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90017)

## Details

Type

Out-of-Bounds Read

Impact

Information Disclosure, Denial Of Service

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Published

16 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-90017](https://nvd.nist.gov/vuln/detail/CVE-2026-90017)
- [https://git.kernel.org/stable/c/136f9a3ab87ded8aaf081425cfb2059659dd9023](https://git.kernel.org/stable/c/136f9a3ab87ded8aaf081425cfb2059659dd9023)
- [https://git.kernel.org/stable/c/1410bce22351ba15d8e58287cbf09d55d7f21fc9](https://git.kernel.org/stable/c/1410bce22351ba15d8e58287cbf09d55d7f21fc9)
- [https://git.kernel.org/stable/c/15081ff835b29e456da29303b32efc436df04695](https://git.kernel.org/stable/c/15081ff835b29e456da29303b32efc436df04695)
- [https://git.kernel.org/stable/c/310aaa8058d19cc431aedac0f5bb814e84479393](https://git.kernel.org/stable/c/310aaa8058d19cc431aedac0f5bb814e84479393)
- [https://git.kernel.org/stable/c/a54fd1a44862d263df9f8bc17fca3620be31addb](https://git.kernel.org/stable/c/a54fd1a44862d263df9f8bc17fca3620be31addb)
- [https://git.kernel.org/stable/c/b041e3f35e0d262d42a711094ab594634d72744a](https://git.kernel.org/stable/c/b041e3f35e0d262d42a711094ab594634d72744a)
- [https://git.kernel.org/stable/c/ff917923f4fb9c83717ba135ee47d7e4c1567bb7](https://git.kernel.org/stable/c/ff917923f4fb9c83717ba135ee47d7e4c1567bb7)
- [https://git.kernel.org/stable/c/0b7f64c7bb9664777168768c6b44affb07dcbf24](https://git.kernel.org/stable/c/0b7f64c7bb9664777168768c6b44affb07dcbf24)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)