CVE-2026-98185

Out-of-bounds read via unchecked scan response lengths

Published Oct 6, 2026 · Updated Oct 6, 2026

Out-of-bounds read in Linux kernel mwifiex scan handling allows context-dependent attackers to induce reads beyond a firmware command response. The mwifiex_ret_802_11_scan() handler subtracts fixed fields and a firmware-reported BSS length from resp->size without checking either extent, so the derived TLV length can underflow. The path requires a Marvell mwifiex Wi-Fi device to return a short or oversized scan response; control by a radio peer and disclosure of the over-read data are not established.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Linux kernel mwifiex scan handling allows context-dependent attackers to induce reads beyond a firmware command response. The mwifiex_ret_802_11_scan() handler subtracts fixed fields and a firmware-reported BSS length from resp->size without checking either extent, so the derived TLV length can underflow. The path requires a Marvell mwifiex Wi-Fi device to return a short or oversized scan response; control by a radio peer and disclosure of the over-read data are not established.

The record

CVE
CVE-2026-98185
Published
Oct 6, 2026
Updated
Oct 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 6, 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=3.0
  2. Affected versionversion=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <25217c5f6ce0bf3004f80c129464cd35fe9a420f
  3. Affected versionversion=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <3687d7d48070838cc2953431b3a27717cab0aaf6
  4. Affected versionversion=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <48312f0085aa1577d6d41af2a079b34de17c1a57
  5. Affected versionversion=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <7106ad8b74f50cca1ef36131f327d2c78f556daa
  6. Affected versionversion=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <9cff2f39ed38a32070b08364c4c9346e85b8f9ec
  7. Affected versionversion=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <c4943323fda22ef27bb6479b9d328ae48c63f64c
  8. Affected versionversion=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <cb0008480ed7d5cf76f3ad9668a91bbb7d0b4417
  9. Affected versionversion=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <dccf5ecaad4d8d43c545921f20328e8f91af8698

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=3.0; version=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <25217c5f6ce0bf3004f80c129464cd35fe9a420f; version=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <3687d7d48070838cc2953431b3a27717cab0aaf6; version=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <48312f0085aa1577d6d41af2a079b34de17c1a57; version=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <7106ad8b74f50cca1ef36131f327d2c78f556daa; version=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <9cff2f39ed38a32070b08364c4c9346e85b8f9ec; version=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <c4943323fda22ef27bb6479b9d328ae48c63f64c; version=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <cb0008480ed7d5cf76f3ad9668a91bbb7d0b4417; version=5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e <dccf5ecaad4d8d43c545921f20328e8f91af8698

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)
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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