CVE-2026-98430

Unspecified impact via premature interrupt queue destruction

Published Oct 14, 2026 · Updated Oct 14, 2026

Use-after-free in Linux Kernel's EFA driver allows attackers to cause unspecified impact via management interrupt timing. The management IRQ handler accesses admin completion and asynchronous event queues before initialization or after destruction because IRQ registration outlasts queue validity. Exposure requires the affected EFA driver and device lifecycle paths; public evidence does not establish attacker control, required privileges, or a specific operational consequence.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Linux Kernel's EFA driver allows attackers to cause unspecified impact via management interrupt timing. The management IRQ handler accesses admin completion and asynchronous event queues before initialization or after destruction because IRQ registration outlasts queue validity. Exposure requires the affected EFA driver and device lifecycle paths; public evidence does not establish attacker control, required privileges, or a specific operational consequence.

The record

CVE
CVE-2026-98430
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
Linux Foundation
Product
Linux Kernel
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.2
  2. Affected versionversion=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <00f7df59543cce445cfd2f109ace88c17d8aef4d
  3. Affected versionversion=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <0a8a105978e5ace0d885964317c5aed8ab4c0a0c
  4. Affected versionversion=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <bc7e64bad96c23fb343f47689670d0037f1a65e7
  5. Affected versionversion=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <cf5520d1c931a70ccce0a1a247113bcec47a42be
  6. Affected versionversion=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <d2a1c0bf4139c17b8d7668322b78c28d8c5b2dd0
  7. Affected versionversion=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <e08aca85c02ff290f785f07acae758f0daf5f49e

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Linux Foundation · Linux Kernelversion=5.2; version=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <00f7df59543cce445cfd2f109ace88c17d8aef4d; version=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <0a8a105978e5ace0d885964317c5aed8ab4c0a0c; version=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <bc7e64bad96c23fb343f47689670d0037f1a65e7; version=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <cf5520d1c931a70ccce0a1a247113bcec47a42be; version=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <d2a1c0bf4139c17b8d7668322b78c28d8c5b2dd0; version=b7f5e880f3774ff1934ce272e1c3b673a3a9c414 <e08aca85c02ff290f785f07acae758f0daf5f49e

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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