CVE-2026-68197

Kernel crash via unchecked HT Operation pointer

Published Aug 10, 2026 · Updated Aug 10, 2026

NULL pointer dereference in the mwifiex Wi-Fi driver in Linux allows remote attackers to crash the kernel through a crafted access point. The mwifiex_tdls_add_ht_oper() path checks bcn_ht_cap but dereferences independently populated bcn_ht_oper without verifying that it exists. Exposure requires the mwifiex driver, association to an access point advertising HT Capabilities without HT Operation, and TDLS link setup; the bounded result is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the mwifiex Wi-Fi driver in Linux allows remote attackers to crash the kernel through a crafted access point. The mwifiex_tdls_add_ht_oper() path checks bcn_ht_cap but dereferences independently populated bcn_ht_oper without verifying that it exists. Exposure requires the mwifiex driver, association to an access point advertising HT Capabilities without HT Operation, and TDLS link setup; the bounded result is a kernel crash.

The record

CVE
CVE-2026-68197
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
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

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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=3.16
  2. Affected versionversion=396939f94084d5923d558e9f22db48bc51156e47 <45011e4d9ba3f2182e5df64be65888044fa20771
  3. Affected versionversion=396939f94084d5923d558e9f22db48bc51156e47 <9375a4ea4121625ef27a46b74781cda66a5cc61b
  4. Affected versionversion=396939f94084d5923d558e9f22db48bc51156e47 <c3d68e294cbb6a4090bb219d3dcaca85a011809b
  5. Affected versionversion=396939f94084d5923d558e9f22db48bc51156e47 <cca4398aa305c22016d1714f388e2fa6ea4e5ad4
  6. Affected versionversion=396939f94084d5923d558e9f22db48bc51156e47 <eb42c3c8fd479166c42984728754cd779c71fd60

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.16; version=396939f94084d5923d558e9f22db48bc51156e47 <45011e4d9ba3f2182e5df64be65888044fa20771; version=396939f94084d5923d558e9f22db48bc51156e47 <9375a4ea4121625ef27a46b74781cda66a5cc61b; version=396939f94084d5923d558e9f22db48bc51156e47 <c3d68e294cbb6a4090bb219d3dcaca85a011809b; version=396939f94084d5923d558e9f22db48bc51156e47 <cca4398aa305c22016d1714f388e2fa6ea4e5ad4; version=396939f94084d5923d558e9f22db48bc51156e47 <eb42c3c8fd479166c42984728754cd779c71fd60

Published CVSS scores

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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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