Unknown

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

In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper mwifiex_tdls_add_ht_oper() gates its follow-the-AP-bandwidth path on bss_desc->bcn_ht_cap being present, but then dereferences a different pointer, bss_desc->bcn_ht_oper: if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) && bss_desc->bcn_ht_cap && ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param)) bcn_ht_cap and bcn_ht_oper are populated independently while parsing the associated AP's beacon in mwifiex_update_bss_desc_with_ie(): an AP that advertises an HT Capabilities element but no HT Operation element leaves bcn_ht_cap non-NULL and bcn_ht_oper NULL. Setting up a TDLS link to a peer while associated to such an AP then dereferences the NULL bcn_ht_oper and crashes the kernel. Every other bcn_ht_oper user in the driver NULL-checks it first. Guard on the pointer that is actually dereferenced. Found by 0sec automated security-research tooling (https://0sec.ai).

Published Aug 10, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+2

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.22%

ahead of 12% of scored CVEs · Oct 30, 2026

Affects

Linux

CVSS base

—

Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ 396939f94084d5923d558e9f22db48bc51156e47 and < e1770f7410b4232a0267924f99751dc9c5ca31af≥ 396939f94084d5923d558e9f22db48bc51156e47 and < 8c2058717fd06f05d421c2d3adf1dff3c3abcda1≥ 396939f94084d5923d558e9f22db48bc51156e47 and < fba7eb7b248ea0618235f504158b685d752a153a≥ 396939f94084d5923d558e9f22db48bc51156e47 and < eb42c3c8fd479166c42984728754cd779c71fd60≥ 396939f94084d5923d558e9f22db48bc51156e47 and < 45011e4d9ba3f2182e5df64be65888044fa20771≥ 396939f94084d5923d558e9f22db48bc51156e47 and < 9375a4ea4121625ef27a46b74781cda66a5cc61b≥ 396939f94084d5923d558e9f22db48bc51156e47 and < cca4398aa305c22016d1714f388e2fa6ea4e5ad4≥ 396939f94084d5923d558e9f22db48bc51156e47 and < c3d68e294cbb6a4090bb219d3dcaca85a011809b and 1 more version 3.16	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 15, 2026 → Oct 30, 2026 · 15 reading(s) · max 0.22%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 15, 2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Aug 10, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

8 on the record

git.kernel.org/stable/c/45011e4d9ba3f2182e5df64be65888044fa20771
NIST National Vulnerability Database
git.kernel.org/stable/c/c3d68e294cbb6a4090bb219d3dcaca85a011809b
NIST National Vulnerability Database
git.kernel.org/stable/c/eb42c3c8fd479166c42984728754cd779c71fd60
NIST National Vulnerability Database
git.kernel.org/stable/c/cca4398aa305c22016d1714f388e2fa6ea4e5ad4
NIST National Vulnerability Database
git.kernel.org/stable/c/fba7eb7b248ea0618235f504158b685d752a153a
NIST National Vulnerability Database
git.kernel.org/stable/c/e1770f7410b4232a0267924f99751dc9c5ca31af
NIST National Vulnerability Database
git.kernel.org/stable/c/9375a4ea4121625ef27a46b74781cda66a5cc61b
NIST National Vulnerability Database
git.kernel.org/stable/c/8c2058717fd06f05d421c2d3adf1dff3c3abcda1
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Unknown CVE-2026-99216 Drivers: hv: Don't reset VMBus connection state on error/exit paths 3d
Unknown CVE-2026-99215 power: supply: core: prevent unregistering a power supply while a callback runs 3d
Unknown CVE-2026-99207 scsi: target: Disable interrupts while holding delayed_cmd_lock 3d
Unknown CVE-2026-99208 drm/xe/oa: Zero OA buffer at allocation 3d
Unknown CVE-2026-99209 drm/xe: skip eviction of a BO with no resource 3d
Unknown CVE-2026-99210 accel/rocket: clear rdev on device init failure 3d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CVSS score published by NVD, the CNA, CISA or GitHub so far.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-68197 is "wifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.22% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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