CVE-2026-90017

Out-of-bounds read via unchecked action-frame length

Published Sep 16, 2026 · Updated Sep 16, 2026

Out-of-bounds read in the Linux rtl8723bs driver since 4.12 allows attackers to trigger a 1–2-byte read via a short action frame. rtw_action_frame_parse() advances 24 bytes into the frame and reads two body bytes without verifying that frame_len is at least 26. Reachability requires a nearby peer or local caller able to submit a truncated management frame; the documented read is limited to 1–2 bytes.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the Linux rtl8723bs driver since 4.12 allows attackers to trigger a 1–2-byte read via a short action frame. rtw_action_frame_parse() advances 24 bytes into the frame and reads two body bytes without verifying that frame_len is at least 26. Reachability requires a nearby peer or local caller able to submit a truncated management frame; the documented read is limited to 1–2 bytes.

The record

CVE
CVE-2026-90017
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.12
  2. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <0b7f64c7bb9664777168768c6b44affb07dcbf24
  3. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <136f9a3ab87ded8aaf081425cfb2059659dd9023
  4. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <1410bce22351ba15d8e58287cbf09d55d7f21fc9
  5. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <15081ff835b29e456da29303b32efc436df04695
  6. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <310aaa8058d19cc431aedac0f5bb814e84479393
  7. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <a54fd1a44862d263df9f8bc17fca3620be31addb
  8. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <b041e3f35e0d262d42a711094ab594634d72744a
  9. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <ff917923f4fb9c83717ba135ee47d7e4c1567bb7

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.12; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <0b7f64c7bb9664777168768c6b44affb07dcbf24; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <136f9a3ab87ded8aaf081425cfb2059659dd9023; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <1410bce22351ba15d8e58287cbf09d55d7f21fc9; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <15081ff835b29e456da29303b32efc436df04695; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <310aaa8058d19cc431aedac0f5bb814e84479393; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <a54fd1a44862d263df9f8bc17fca3620be31addb; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <b041e3f35e0d262d42a711094ab594634d72744a; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <ff917923f4fb9c83717ba135ee47d7e4c1567bb7

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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