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
Not known to be exploited · fixed in fba7eb7b248ea0618235f504158b685d752a153a : update Linux kernel when convenient.
Data as of 6 Nov 2026, 17:18 UTC
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
Disclosed: evidence found.
CVE published 10 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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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
- git.kernel.org/stable/c/e1770f7410b4232a0267924f99751dc9c5ca31af (opens in a new tab)
- git.kernel.org/stable/c/8c2058717fd06f05d421c2d3adf1dff3c3abcda1 (opens in a new tab)
- git.kernel.org/stable/c/fba7eb7b248ea0618235f504158b685d752a153a (opens in a new tab)
- git.kernel.org/stable/c/eb42c3c8fd479166c42984728754cd779c71fd60 (opens in a new tab)
- git.kernel.org/stable/c/45011e4d9ba3f2182e5df64be65888044fa20771 (opens in a new tab)
- git.kernel.org/stable/c/9375a4ea4121625ef27a46b74781cda66a5cc61b (opens in a new tab)
- git.kernel.org/stable/c/cca4398aa305c22016d1714f388e2fa6ea4e5ad4 (opens in a new tab)
- git.kernel.org/stable/c/c3d68e294cbb6a4090bb219d3dcaca85a011809b (opens in a new tab)