Is there a patch available for CVE-2026-97522?

Yes, a patch is available for CVE-2026-97522. Update the affected software to the latest version immediately.

Linux CVE-2026-97522

EUVD-2026-86830

2026-09-25 Linux

GHSA-pwwm-ccjp-fwfv

Information Disclosure Linux

View

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:

mptcp: fix bad accounting in __mptcp_subflow_push_pending()

If __subflow_push_pending() errors out we should avoid updating the copied byte counters, to avoid mismatch push call later on.

Affected VersionsENISA

Linux patch: 7.3-rc4

Linux patch: 0

Linux patch: 6.12.111

Linux patch: 7.2.7

Linux patch: 6.18.53

Linux 0fa1b3783a17d75a4aa1651a18ede041ffca5750 <9781fa35d9f7a87a83115acd3a88bc9ce35b5407

Linux 0fa1b3783a17d75a4aa1651a18ede041ffca5750 <dc054821e639a2e14f1419436612db70b6af45fc

Linux 0fa1b3783a17d75a4aa1651a18ede041ffca5750 <a0a64525f3414268ed4b1945a1dc690aa974dd4f

Linux 6.6

Linux 0fa1b3783a17d75a4aa1651a18ede041ffca5750 <f3ef03357396d4b147d8e76c75fb612c2f264ffc

Affected Packages

euvd linux no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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Exploit and PoC references, threat intelligence from 22 sources

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Lifecycle Timeline

Patch available

Sep 25, 2026 - 11:02 EUVD

CVE Published

Sep 25, 2026 - 10:21 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 91% 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.