Is there a patch available for CVE-2026-98066?

Yes, a patch is available for CVE-2026-98066. Update the affected software to the latest version immediately.

Linux CVE-2026-98066

EUVD-2026-86719

2026-09-25 Linux

GHSA-m4v8-qp6h-hh9w

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:

ALSA: caiaq: Fix potential double-free at error path

The fix for caiaq driver's resource management to handle the errors tries to release the resources in a common destructor call, but as a sashiko review for another patch suggested, some of the audio resources such as URBs have been already freed, and this may lead to a double-free.

For addressing the double-free, call the common destructor function from each place, and assure that the resource pointers get cleared.

Affected VersionsENISA

Linux 6.6.140 <6.7

Linux patch: 0

Linux 5.15.209 <5.16

Linux 28abd224db4a49560b452115bca3672a20e45b2f <b629ae7b3eddc6812d5af3614b8c1bd76d65fa75

Linux 6251e3e256337a30160ef59ab1580dde4d1acd28 <2883d65a3d9a8d9a682cdb003e6ab7fb28bb17f8

Linux 28abd224db4a49560b452115bca3672a20e45b2f <3b26ceef88c110f4d188387cffa0df78657be904

Linux patch: 6.18.53

Linux 09616e25f502080ba684fc7fcf959d1376ab756d

Linux patch: 7.3-rc2

Linux 096dd8519cf2f768e9e14f224b627f7aaee1a9c5

Linux da938aa9fc7826901921dcea225948ab21a97e45

Linux 6.1.175 <6.2

Linux patch: 7.2.7

Linux 5.10.258 <5.11

Linux b956e48371f2ff72b76be9a829800ecec963bd45

Linux e59ecd4ee3a450db6cb4e4ecaa3efdd593f80056 <1dd715ca0568e4833ed5878f49b028b449941096

Linux 7.0.4 <7.1

Linux 6.12.86 <6.12.111

Linux 7.1

Linux f537e3ad69609f6924a4db6b4a7f6561f5288bdd

Linux patch: 6.12.111

Linux 6.18.27 <6.18.53

Affected Packages

euvd linux fix: 5.11, 5.16, 6.2, 6.7, 6.12.111, 6.18.53, 7.1

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

Sep 25, 2026 - 11:02 EUVD

CVE Published

Sep 25, 2026 - 10:24 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 95% 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.