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VulnerabilityPublished Updated

CVE-2026-68197: Linux kernel · wifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in fba7eb7b248ea0618235f504158b685d752a153a : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:18 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch
Available – fixed in fba7eb7b248ea0618235f504158b685d752a153a, eb42c3c8fd479166c42984728754cd779c71fd60, e1770f7410b4232a0267924f99751dc9c5ca31af +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 396939f94084d5923d558e9f22db48bc51156e47, < fba7eb7b248ea0618235f504158b685d752a153a
Fixed in
  • fba7eb7b248ea0618235f504158b685d752a153a
LinuxLinuxAffected
  • ≥ 396939f94084d5923d558e9f22db48bc51156e47, < eb42c3c8fd479166c42984728754cd779c71fd60
Fixed in
  • eb42c3c8fd479166c42984728754cd779c71fd60
LinuxLinuxAffected
  • ≥ 396939f94084d5923d558e9f22db48bc51156e47, < e1770f7410b4232a0267924f99751dc9c5ca31af
Fixed in
  • e1770f7410b4232a0267924f99751dc9c5ca31af
LinuxLinuxAffected
  • ≥ 396939f94084d5923d558e9f22db48bc51156e47, < cca4398aa305c22016d1714f388e2fa6ea4e5ad4
Fixed in
  • cca4398aa305c22016d1714f388e2fa6ea4e5ad4
LinuxLinuxAffected
  • ≥ 396939f94084d5923d558e9f22db48bc51156e47, < c3d68e294cbb6a4090bb219d3dcaca85a011809b
Fixed in
  • c3d68e294cbb6a4090bb219d3dcaca85a011809b
LinuxLinuxAffected
  • ≥ 396939f94084d5923d558e9f22db48bc51156e47, < 45011e4d9ba3f2182e5df64be65888044fa20771
Fixed in
  • 45011e4d9ba3f2182e5df64be65888044fa20771

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available and has been applied in multiple commits to the Linux kernel. Users should update their Linux kernel to a version that includes these fixes to prevent the NULL pointer dereference and associated kernel crash.

Description

A NULL pointer dereference vulnerability in the Linux kernel's mwifiex driver occurs when an access point (AP) advertises HT Capabilities but omits the HT Operation element. This leads to a kernel crash when setting up a TDLS link due to dereferencing a NULL pointer. The issue has been fixed by adding a guard on the pointer before dereferencing.

References

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