CVE-2026-97584Hinoki check available

System crash via incorrect AFS endpoint free

Published Sep 25, 2026 · Updated Sep 25, 2026

Incorrect memory release in the AFS client in Linux 6.12.102 through 6.12.110 and 6.15 allows attackers to crash the kernel during server lookup. In afs_lookup_server(), candidate cleanup calls kfree() on the existing server endpoint_state even though the candidate has no endpoint state, invalidating memory still owned by the live server. Triggering the fault requires the in-kernel AFS client and a lookup path that finds an existing server while discarding a candidate; published sources do not establish attacker privileges or remote reachability.

CVSS severityUnavailable
Unscored
EPSS probability0.16%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Incorrect memory release in the AFS client in Linux 6.12.102 through 6.12.110 and 6.15 allows attackers to crash the kernel during server lookup. In afs_lookup_server(), candidate cleanup calls kfree() on the existing server endpoint_state even though the candidate has no endpoint state, invalidating memory still owned by the live server. Triggering the fault requires the in-kernel AFS client and a lookup path that finds an existing server while discarding a candidate; published sources do not establish attacker privileges or remote reachability.

The record

CVE
CVE-2026-97584
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=4882ba78574e2d8c579658f65f6784b0d139d173 <044d596094af4b769fb8e1173dff0d08bd68db6c
  2. Affected versionversion=4882ba78574e2d8c579658f65f6784b0d139d173 <349e713039a1fd6659c27e7a66238bfa49ce37e9
  3. Affected versionversion=4882ba78574e2d8c579658f65f6784b0d139d173 <e5bc0fa9959dc8f7eb1afab7c039594a16a1a65c
  4. Affected versionversion=6.12.101 <6.12.111
  5. Affected versionversion=6.15
  6. Affected versionversion=d6aa05cd995830f6dcee7b139335edb266de38a6 <981d72663dee2fa6efaf202293e68d2b10a0d1d4

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=4882ba78574e2d8c579658f65f6784b0d139d173 <044d596094af4b769fb8e1173dff0d08bd68db6c; version=4882ba78574e2d8c579658f65f6784b0d139d173 <349e713039a1fd6659c27e7a66238bfa49ce37e9; version=4882ba78574e2d8c579658f65f6784b0d139d173 <e5bc0fa9959dc8f7eb1afab7c039594a16a1a65c; version=6.12.101 <6.12.111; version=6.15; version=d6aa05cd995830f6dcee7b139335edb266de38a6 <981d72663dee2fa6efaf202293e68d2b10a0d1d4

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.

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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

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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