Is there a patch available for CVE-2026-98394?

Yes, a patch is available for CVE-2026-98394. Update the affected software to the latest version immediately.

Linux CVE-2026-98394

EUVD-2026-101043

2026-10-14 Linux

GHSA-78rw-466c-3p7p

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:

af_unix: Return immediately when manage_oob() returns NULL for 0-length buffer.

Fahad Alharbi reported that recv(0, MSG_PEEK) triggers busy-wait in unix_stream_read_generic() if recv() is blocking and the last skb in the queue is MSG_OOB skb.

In such a situation, TCP returns 0 immediately regardless of blocking or non-blocking.

Let's follow the behaviour.

Affected VersionsENISA

Linux 314001f0bf927015e459c9d387d62a231fe93af3 <3d3c7a3df66b2ca3d2cd1a2a0c37eb701feba713

Linux 5.15

Linux 314001f0bf927015e459c9d387d62a231fe93af3 <6e5ee08eb5858d175da6768d75d163817b6a9d4a

Linux 314001f0bf927015e459c9d387d62a231fe93af3 <c81c5be3826c8467945b964d0cf7f7b3d65461db

Linux patch: 6.18.53

Linux patch: 0

Linux patch: 6.12.111

Linux patch: 7.3-rc3

Linux 314001f0bf927015e459c9d387d62a231fe93af3 <d5dd55b316ca229a4cbf11729483ba5bb57233e7

Linux patch: 7.2.7

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 - 13:25 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 90% exploitable

Data Quality

3 sources

Confidence: Low

EUVD

CVE.org

EPSS MSRC

VulDB

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.