Is there a patch available for CVE-2026-99221?

Yes, a patch is available for CVE-2026-99221. Update the affected software to the latest version immediately.

Linux CVE-2026-99221

EUVD-2026-115263

2026-11-02 Linux

GHSA-5mq3-jmpv-w7p5

Information Disclosure Linux

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Awaiting Data No severity or threat signals available yet. Label will update when CVSS score is published or threat intelligence arrives. 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:

keys/trusted_keys: return immediately after TPM unseal failure

trusted_tpm_unseal() proceeds to pcrlock() when the TPM unseal operation fails. If pcrlock() succeeds, its return value overwrites the unseal error, causing key instantiation to succeed.

Return immediately when unseal fails to preserve the original error.

Affected VersionsENISA

Linux 5d0682be318910e028bdf57c90a1695ffc34be37 <4876f09ce222e140a73aad950882b3605440c935

Linux 5d0682be318910e028bdf57c90a1695ffc34be37 <ed697a5f667435bbb1cedbe5bd9f300de645047d

Linux 5d0682be318910e028bdf57c90a1695ffc34be37 <234d09bb3b3d84851d4b3246272addc30f3353eb

Linux patch: 5.15.224

Linux patch: 6.6.161

Linux 5d0682be318910e028bdf57c90a1695ffc34be37 <e55d48f21f591a9fe80d26b5fbd1912ea725d9e6

Linux patch: 0

Linux patch: 6.18.60

Linux 5d0682be318910e028bdf57c90a1695ffc34be37 <2d92a0f87c338a08367aff05edd1ade86da4ac8d

Linux patch: 6.1.191

Linux 5d0682be318910e028bdf57c90a1695ffc34be37 <63b19ec2863b2cb5279b746ecd3d6210b1a93945

Linux patch: 7.2.14

Linux 5d0682be318910e028bdf57c90a1695ffc34be37 <6e359d8cb8580b9874801dea930086effd4d9c62

Linux patch: 6.12.115

Linux patch: 7.3.1

Linux 5.13

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

Nov 02, 2026 - 17:18 EUVD

CVE Published

Nov 02, 2026 - 16:06 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 93% exploitable

Data Quality

1 sources

Confidence: Low

EUVD

CVE.org

EPSS

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.