Is there a patch available for EUVD-2026-103956?

Yes, a patch is available for EUVD-2026-103956. Update the affected software to the latest version immediately.

Linux EUVD-2026-103956

| CVE-2026-98702

2026-10-18 Linux

GHSA-6466-2f74-2mgw

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: reject invalid 320 MHz CSA bandwidth

The HT/VHT channel definition validator can receive a 320 MHz bandwidth indication from a received CSA frame on a non-6 GHz link. It warns for this unsupported width but continues with an uninitialized vht_operation.chan_width, which is then read by ieee80211_chandef_vht_oper(). With panic_on_warn enabled, this lets a received frame panic the kernel.

Reject the channel definition before entering the VHT operation conversion. This preserves the existing CSA fallback while avoiding both the warning and the uninitialized read.

Affected VersionsENISA

Linux 21c3f8f95554feff9bed15703e89adbe582e0383 <1892e71aa2e5ee667d87c6e49e3661f5e290303b

Linux patch: 7.3-rc6

Linux patch: 6.12.113

Linux patch: 0

Linux patch: 6.18.56

Linux 21c3f8f95554feff9bed15703e89adbe582e0383 <79b3ce0d881cd6e5d4d3496b19f5cc5e7089a56c

Linux patch: 7.2.10

Linux 6.9

Linux 21c3f8f95554feff9bed15703e89adbe582e0383 <cf0ddacce173890407ed3fa50c8ea9b3c0cc0e16

Linux 21c3f8f95554feff9bed15703e89adbe582e0383 <56e236759f0a8dc910c2ae7cd3c161f298ee5794

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 18, 2026 - 17:19 EUVD

CVE Published

Oct 18, 2026 - 15:46 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 94% 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.