Is there a patch available for EUVD-2026-86649?

Yes, a patch is available for EUVD-2026-86649. Update the affected software to the latest version immediately.

Linux EUVD-2026-86649

| CVE-2026-97995

2026-09-25 Linux

GHSA-64xh-4w8v-x8v5

Buffer Overflow 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:

virtio_console: do not free control-out buffers on remove

__send_control_msg() publishes &portdev->cpkt as the control-out virtqueue cookie. remove_vqs() walks every virtqueue and passes leftover cookies to free_buf(), which treats them as struct port_buffer and reads sgpages.

If a control message is still on c_ovq when the device is unbound, free_buf() reads past the ports_device object.

KASAN reported slab-out-of-bounds in free_buf():

free_buf remove_vqs virtcons_remove unbind_store

The object was the ports_device allocated in virtcons_probe().

Drain c_ovq without freeing. The packet lives in portdev and is released with it.

Affected VersionsENISA

Linux a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b <894f98e73983f37354214a89a3a7fd35bf9e3072

Linux 4.9.98 <4.10

Linux 47cb14192bcbba3f15b1c3561e05e084e56fdef6

Linux f92b16b815efe8207090a9b5a767618fd89542ca

Linux 4.1.52 <4.2

Linux 3.18.108 <3.19

Linux a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b <a80c33488e0bbe642ed803b13a4ac8078a70b507

Linux d2bbfac82b7942afc5d8e564d7087835280df495

Linux patch: 6.18.53

Linux a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b <177ee901aa2bab02e7f1f8edbb814fd5e386ed62

Linux 4.16.7 <4.17

Linux patch: 7.2.7

Linux a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b <f620c40ea6862feed84deb105568b21ec53a7830

Linux 6b1c41a0f7183702abb7a104c6c7e196ad69a6b3

Linux 4.14.39 <4.15

Linux 4.4.131 <4.5

Linux patch: 6.12.111

Linux patch: 7.3-rc3

Linux 3.16.60 <3.17

Linux a88e13d9a092fbb772d380944b44eb549ef131fe

Linux 4.17

Linux patch: 0

Linux dd807a784fd36f4136516d5858efb6473dda422c

Linux 9037306163a6ba5587e4b5ca511ac7be4fb7295b

Affected Packages

euvd linux fix: 3.17, 3.19, 4.2, 4.5, 4.10, 4.15, 4.17

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 - 10:23 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

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.