CVE-2026-68326Public exploit

Pre-auth kernel memory corruption via unchecked event length

Published Aug 10, 2026 · Updated Aug 10, 2026

Out-of-bounds access in the Linux mwifiex driver allows physically proximate attackers to disclose or corrupt kernel memory via Wi-Fi. mwifiex_process_uap_event() subtracts an unchecked firmware-supplied event length and passes the oversized association-IE span to cfg80211 parsing and netlink copying. Reachability requires a supported Marvell mwifiex device in AP/uAP mode; a crafted pre-authentication association request can expose stale kernel data, overwrite memory, or panic the host.

CVSS severity8.8
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in the Linux mwifiex driver allows physically proximate attackers to disclose or corrupt kernel memory via Wi-Fi. mwifiex_process_uap_event() subtracts an unchecked firmware-supplied event length and passes the oversized association-IE span to cfg80211 parsing and netlink copying. Reachability requires a supported Marvell mwifiex device in AP/uAP mode; a crafted pre-authentication association request can expose stale kernel data, overwrite memory, or panic the host.

The record

CVE
CVE-2026-68326
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1190
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3.5
  2. Affected versionversion=e568634ae7ac379661c90731d480e067929420a1 <a3f47d7c75ddad1a14621a309286f9fae3cba191
  3. Affected versionversion=e568634ae7ac379661c90731d480e067929420a1 <ad26c75ae25749313248f06510ebe43b5bf4adcc
  4. Affected versionversion=e568634ae7ac379661c90731d480e067929420a1 <b6766d7ea43edf5de9d5a572bc58b631d09efe4b
  5. Affected versionversion=e568634ae7ac379661c90731d480e067929420a1 <d21464d93f8ba464dc3d7b4b31c6e0adcd9f659c
  6. Affected versionversion=e568634ae7ac379661c90731d480e067929420a1 <f0858bfc7d3cab411a447b88e3ef970e575032c9

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.5; version=e568634ae7ac379661c90731d480e067929420a1 <a3f47d7c75ddad1a14621a309286f9fae3cba191; version=e568634ae7ac379661c90731d480e067929420a1 <ad26c75ae25749313248f06510ebe43b5bf4adcc; version=e568634ae7ac379661c90731d480e067929420a1 <b6766d7ea43edf5de9d5a572bc58b631d09efe4b; version=e568634ae7ac379661c90731d480e067929420a1 <d21464d93f8ba464dc3d7b4b31c6e0adcd9f659c; version=e568634ae7ac379661c90731d480e067929420a1 <f0858bfc7d3cab411a447b88e3ef970e575032c9

Published CVSS scores

8.8Linux CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1190Exploit Public-Facing Application

Public exploit references

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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