Is there a patch available for CVE-2026-98309?

Yes, a patch is available for CVE-2026-98309. Update the affected software to the latest version immediately.

Linux CVE-2026-98309

EUVD-2026-93294

2026-10-06 Linux

GHSA-fcmj-9h4r-58r4

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:

drm/vc4: Use managed KMS polling to fix UAF on unbind

vc4_kms_load() calls drm_kms_helper_poll_init() but the driver provides no matching drm_kms_helper_poll_fini(). The output poll work stays scheduled after unbind and runs on the freed drm_device:

modprobe vc4; rmmod vc4; sleep 10

BUG: KASAN: slab-use-after-free in delayed_work_timer_fn BUG: KASAN: slab-use-after-free in drm_client_dev_hotplug [drm] Workqueue: events output_poll_execute [drm_kms_helper] Allocated by task 171: __devm_drm_dev_alloc Freed by task 262 (rmmod): drm_dev_put / component_del

Use drmm_kms_helper_poll_init() so polling is finalized with the device, as other drivers do.

Affected VersionsENISA

Linux patch: 6.12.112

Linux c8b75bca92cbf064b9fa125fc74a85994452e935 <073a30d75f309812ed61af134f24ffef4107b13a

Linux c8b75bca92cbf064b9fa125fc74a85994452e935 <b6beee927e7f4e3142032ff91b2d0417cdddc0f6

Linux c8b75bca92cbf064b9fa125fc74a85994452e935 <cf0c4432bda37b02e7d430ff5017228ceb7caf0c

Linux patch: 7.2.8

Linux c8b75bca92cbf064b9fa125fc74a85994452e935 <7f9780df677370a19b4ec9764f13b1b82073e0d9

Linux patch: 7.3-rc4

Linux patch: 6.6.158

Linux patch: 6.18.54

Linux 4.4

Linux patch: 0

Linux c8b75bca92cbf064b9fa125fc74a85994452e935 <ee507691c18f9fee5d4751e295ab9a7ff31d59ae

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 06, 2026 - 10:02 EUVD

CVE Published

Oct 06, 2026 - 08:46 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.