CVE-2026-90018Hinoki check available

Adjacent kernel crash via unchecked WPS attribute length

Published Sep 16, 2026 · Updated Sep 16, 2026

Out-of-bounds memory access in the rtl8723bs driver in Linux allows adjacent attackers to crash the kernel via crafted WPS frames. rtw_get_wps_attr() trusts the wire-supplied attribute length after checking only the four-byte header, then passes that unchecked length to memcpy into undersized stack destinations. Exploitation requires an rtl8723bs device to scan and process a malicious beacon or probe response; the bounded demonstrated consequence is a kernel crash.

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

What happened

Out-of-bounds memory access in the rtl8723bs driver in Linux allows adjacent attackers to crash the kernel via crafted WPS frames. rtw_get_wps_attr() trusts the wire-supplied attribute length after checking only the four-byte header, then passes that unchecked length to memcpy into undersized stack destinations. Exploitation requires an rtl8723bs device to scan and process a malicious beacon or probe response; the bounded demonstrated consequence is a kernel crash.

The record

CVE
CVE-2026-90018
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
adjacent
Privileges
unauthenticated

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 <34f51d196c43a42046d229de5e79025d5ca553ca
  3. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <3a6457ebf39080b87c712657fdb38f34a24fc3ff
  4. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <931640dfcb8cfa08f6cfb46229716d8072356420
  5. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <99aa998dec83ba180822f70e6d48a514fc81c20d
  6. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <a53d1ac9ce63db07943b2b2248111003851fb00f
  7. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <fd5e24ea8373347d0352f153a66e8647337d1b10
  8. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <ff61aa3289355dafa811550a1764691cd1f5d33b

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.12; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <34f51d196c43a42046d229de5e79025d5ca553ca; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <3a6457ebf39080b87c712657fdb38f34a24fc3ff; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <931640dfcb8cfa08f6cfb46229716d8072356420; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <99aa998dec83ba180822f70e6d48a514fc81c20d; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <a53d1ac9ce63db07943b2b2248111003851fb00f; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <fd5e24ea8373347d0352f153a66e8647337d1b10; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <ff61aa3289355dafa811550a1764691cd1f5d33b

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

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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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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