CVE-2026-93281Hinoki check available

Kernel out-of-bounds read via off-by-one length check

Published Sep 24, 2026 · Updated Sep 24, 2026

Out-of-bounds read in the rtw89 Wi-Fi driver in Linux 6.1 allows attackers to trigger unspecified impact via a 10-byte HE element. The rtw89_mac_check_he_obss_narrow_bw_ru_iter() function accepts a 10-byte extended capability element and then reads data[10], one byte past its end. Reachability requires an rtw89 station with HE enabled on a radar channel; the public patch establishes the invalid read but documents no crash, disclosure path, or code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Out-of-bounds read in the rtw89 Wi-Fi driver in Linux 6.1 allows attackers to trigger unspecified impact via a 10-byte HE element. The rtw89_mac_check_he_obss_narrow_bw_ru_iter() function accepts a 10-byte extended capability element and then reads data[10], one byte past its end. Reachability requires an rtw89 station with HE enabled on a radar channel; the public patch establishes the invalid read but documents no crash, disclosure path, or code execution.

The record

CVE
CVE-2026-93281
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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=6.1
  2. Affected versionversion=8d540f9d29162e273797bef36686a010724f0f8a <2aba608a86e9b099c9af2ea70b620552dee2b628
  3. Affected versionversion=8d540f9d29162e273797bef36686a010724f0f8a <655c4401c18d735dbaf2cc172ff4f626b3a896a0
  4. Affected versionversion=8d540f9d29162e273797bef36686a010724f0f8a <bddbd1de765bf6ddc0473ad683910eb3a2a92a43
  5. Affected versionversion=8d540f9d29162e273797bef36686a010724f0f8a <eddf53f1edb0cf7f302bd15cdb47cca90948c205
  6. Affected versionversion=8d540f9d29162e273797bef36686a010724f0f8a <f132fc01b359a0f7d81fe13d769ea4e7c4baa66e
  7. Affected versionversion=8d540f9d29162e273797bef36686a010724f0f8a <f2a01deff7d0d5cc3dcbf2358dac113979303c8e

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.1; version=8d540f9d29162e273797bef36686a010724f0f8a <2aba608a86e9b099c9af2ea70b620552dee2b628; version=8d540f9d29162e273797bef36686a010724f0f8a <655c4401c18d735dbaf2cc172ff4f626b3a896a0; version=8d540f9d29162e273797bef36686a010724f0f8a <bddbd1de765bf6ddc0473ad683910eb3a2a92a43; version=8d540f9d29162e273797bef36686a010724f0f8a <eddf53f1edb0cf7f302bd15cdb47cca90948c205; version=8d540f9d29162e273797bef36686a010724f0f8a <f132fc01b359a0f7d81fe13d769ea4e7c4baa66e; version=8d540f9d29162e273797bef36686a010724f0f8a <f2a01deff7d0d5cc3dcbf2358dac113979303c8e

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
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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