Is there a patch available for EUVD-2026-93329?

Yes, a patch is available for EUVD-2026-93329. Update the affected software to the latest version immediately.

Linux EUVD-2026-93329

| CVE-2026-98344

2026-10-06 Linux

GHSA-g4c2-fm3r-x4gh

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:

dmaengine: Fix device kref underflow in dma_chan_put()

dma_chan_get() takes chan->device->ref only on the slow path:

/* no kref on fast path */ if (chan->client_count) { __module_get(owner); chan->client_count++; return 0; } if (!try_module_get(owner)) return -ENODEV; if (!dma_device_get(chan->device)) { // calls kref_get_unless_zero()

dma_chan_put() drops the ref unconditionally, so every fast-path get/put pair drops one extra device reference.

The bug fires when two conditions hold together: a non-private provider has a persistent client holding chan->client_count > 0 and another client cycles dmaengine_get()/dmaengine_put(). When the kref hits zero, the subsequent dma_find_channel() returns NULL even though the provider module is still loaded.

Fix this by dropping device->ref only on the last put, matching the single slow-path get.

Affected VersionsENISA

Linux 8ad342a863590b24ce77681b7e081363fb3333f7 <036b527f92570206da4b8c40b38f8d689e29d0f3

Linux 8ad342a863590b24ce77681b7e081363fb3333f7 <5fb1797a8c9485e40e5492fa0338ab5c7d1f3fef

Linux 8ad342a863590b24ce77681b7e081363fb3333f7 <de2677e57d3161390d8a508f08cddec6ef7e4b23

Linux patch: 5.15.222

Linux patch: 6.1.189

Linux 5.6

Linux patch: 6.6.158

Linux 8ad342a863590b24ce77681b7e081363fb3333f7 <7c3f4ce651d43705f9ec7f778f642a90d5ff4fba

Linux patch: 7.3-rc4

Linux patch: 0

Linux patch: 6.18.54

Linux 8ad342a863590b24ce77681b7e081363fb3333f7 <1a0d9b406febf23054ad595fd47b29325e70fb2d

Linux patch: 6.12.112

Linux 8ad342a863590b24ce77681b7e081363fb3333f7 <57f7f1c6827be7d8f80feca48d2125fb91c6f6ed

Linux 8ad342a863590b24ce77681b7e081363fb3333f7 <44dab659064eb5c10adb0306510eebe848ed592d

Linux patch: 5.10.271

Linux 8ad342a863590b24ce77681b7e081363fb3333f7 <77906ac448d2fa81fa710ae26c0e591ebdc81154

Linux patch: 7.2.8

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 93% 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.