Is there a patch available for CVE-2026-98421?

Yes, a patch is available for CVE-2026-98421. Update the affected software to the latest version immediately.

Linux CVE-2026-98421

EUVD-2026-101070

2026-10-14 Linux

GHSA-6hcf-6997-pq7q

Information Disclosure Linux

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Monitor Track and reassess. Why: No CVSS yet + weak signal (CWE or non-zero EPSS).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisCVE.org

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: require a peer station for TDLS setup confirm

It's nonsense for the setup confirm to go to station that doesn't even exist, and it hits a warning when building the frame:

WARN_ON_ONCE(!sta || !ap_sta)

Only accept WLAN_TDLS_SETUP_CONFIRM when the station is already there as a TDLS station. Need to copy the call to ieee80211_tdls_prep_mgmt_packet() since the existing WLAN_TDLS_DISCOVERY_REQUEST already falls through to it.

Affected VersionsENISA

Linux 6f7eaa47e1de30159277f91f1145a6687f13ffd9 <038e1d126304fd25d507fd4e671232df57bd1799

Linux patch: 6.18.54

Linux patch: 6.6.158

Linux 6f7eaa47e1de30159277f91f1145a6687f13ffd9 <fce36d242a18ddf64731d816a37564103172da11

Linux patch: 6.1.189

Linux patch: 6.12.112

Linux patch: 0

Linux patch: 7.3-rc4

Linux 6f7eaa47e1de30159277f91f1145a6687f13ffd9 <d0afa5395c46d73ad2090aa50209886e84f179bd

Linux 3.17

Linux 6f7eaa47e1de30159277f91f1145a6687f13ffd9 <6bae6ef511a29ef12ab969adeea691067d4d5d74

Linux patch: 7.2.8

Linux 6f7eaa47e1de30159277f91f1145a6687f13ffd9 <1c0a5c96473b9e7a5f4c453ef6a13dc0f5589a4b

Linux 6f7eaa47e1de30159277f91f1145a6687f13ffd9 <742c762bee59c973684f70dfed7de4945d3141e2

Affected Packages

euvd linux no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Exploit and PoC references, threat intelligence from 22 sources

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Lifecycle Timeline

Patch available

Oct 14, 2026 - 15:03 EUVD

CVE Published

Oct 14, 2026 - 13:27 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 89% exploitable

Data Quality

3 sources

Confidence: Low

EUVD

CVE.org

EPSS MSRC

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity Not scored yet

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

No CVSS yet + weak signal (CWE or non-zero EPSS)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.