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Linux CVE-2026-93283

| EUVDEUVD-2026-86155
2026-09-24 Linux GHSA-6m8v-mm29-jx9w
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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:

i3c: master: Fix device_register() error path

When device_register() fails in i3c_master_register_new_i3c_devs(), put_device() is called to drop the reference taken by device_register(). That drops the last reference, so the device's release callback i3c_device_release() runs and frees the i3c_device.

Two problems follow from that:

i3c_device_release() does WARN_ON(i3cdev->desc), so it warns because desc->dev->desc still points back at the descriptor. Clear it before calling put_device().

After put_device() frees the i3c_device, desc->dev is left pointing at freed memory, so clear desc->dev as well. That prevents, for example, i3c_master_unregister_i3c_devs() seeing desc->dev as non-NULL and dereferencing it.

Affected VersionsENISA

Linux cab63f64887616e3c4e31cfd8103320be6ebc8d3 <7f8e2c4f3704d9774bb26b49b1ad6a60ae57d4a0
Linux 204beeb509d37669de34560e83bb8abffe7ee63a
Linux patch: 6.18.52
Linux d48fe8d98171e0fffdeaa8b37ce0a6444bff819b <20a2b6df91fd782ef2ff551febef594d0b46a9a7
Linux 5.10.201 <5.10.270
Linux patch: 5.15.221
Linux patch: 7.3-rc1
Linux 5.4.261 <5.5
Linux patch: 7.2.6
Linux patch: 5.10.270
Linux 6.1.63 <6.1.188
Linux 5.15.139 <5.15.221
Linux 174ae0a3b89e7804e4ea3d31bd83d6e43f39568c <a14dbdf471001dd0601b0c491184990c178a199c
Linux patch: 6.1.188
Linux cab63f64887616e3c4e31cfd8103320be6ebc8d3 <6ecf17bf5fe8da51a6e3fc9e03a76898fcc5c6cf
Linux 6.5.12 <6.6
Linux 1832ed55df45f4145335ad992fb83813cdc58b5d <5bf498623f8397d45f85f14cd631c5e5a565c2fb
Linux patch: 0
Linux patch: 6.6.157
Linux cab63f64887616e3c4e31cfd8103320be6ebc8d3 <74be657d98a8d684c0475f3cbd450ef2a30ffc73
Linux 6.6.2 <6.6.157
Linux 6.7
Linux b24cf43d9babf1265a2bb0ae8d198267cef43b83
Linux e49a51a96b531f1b4bcd8d358e645b6c74ef67e6 <d22ad96f1a0c89e0ba66a2facc7430f0923919e3
Linux cab63f64887616e3c4e31cfd8103320be6ebc8d3 <7ef12e1dd06e442eebf370f6e53c41bd056d0f22
Linux patch: 6.12.110

Affected Packages

euvd linux fix: 5.5, 5.10.270, 5.15.221, 6.1.188, 6.6, 6.6.157

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Lifecycle Timeline

2
Patch available
Sep 24, 2026 - 17:03 EUVD
CVE Published
Sep 24, 2026 - 15:52 cve.org
UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score
0.2%
Top 92% exploitable
Data Quality
3 sources
Confidence: Low

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 occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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