CVE-2025-38393 (GCVE-0-2025-38393)
Vulnerability from cvelistv5 – Published: 2025-07-25 12:53 – Updated: 2026-08-05 12:01
VLAI
EPSS
VEX
Title
NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN
Summary
In the Linux kernel, the following vulnerability has been resolved:
NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN
We found a few different systems hung up in writeback waiting on the same
page lock, and one task waiting on the NFS_LAYOUT_DRAIN bit in
pnfs_update_layout(), however the pnfs_layout_hdr's plh_outstanding count
was zero.
It seems most likely that this is another race between the waiter and waker
similar to commit ed0172af5d6f ("SUNRPC: Fix a race to wake a sync task").
Fix it up by applying the advised barrier.
Severity
7.5 (High)
Assigner
References
10 references
Impacted products
5 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
8acc3e228e1c90bd410f73597a4549e0409f22d6 , < 08287df60bac5b008b6bcdb03053988335d3d282
(git)
Affected: ec23a86e060cbe30b62eb2955adc97c92d80cc4c , < 8846fd02c98da8b79e6343a20e6071be6f372180 (git) Affected: 880265c77ac415090090d1fe72a188fee71cb458 , < e4b13885e7ef1e64e45268feef1e5f0707c47e72 (git) Affected: 880265c77ac415090090d1fe72a188fee71cb458 , < 8ca65fa71024a1767a59ffbc6a6e2278af84735e (git) Affected: 880265c77ac415090090d1fe72a188fee71cb458 , < 864a54c1243ed3ca60baa4bc492dede1361f4c83 (git) Affected: 880265c77ac415090090d1fe72a188fee71cb458 , < 1f4da20080718f258e189a2c5f515385fa393da6 (git) Affected: 880265c77ac415090090d1fe72a188fee71cb458 , < c01776287414ca43412d1319d2877cbad65444ac (git) Affected: f133819e24e78f3aaaa00e9fa2b816d5f73fd172 (git) Affected: 5.10.124 , < 5.10.240 (semver) Affected: 5.15.49 , < 5.15.187 (semver) Affected: 5.18.6 , < 5.19 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.19
Unaffected: 0 , < 5.19 (semver) Unaffected: 5.10.240 , ≤ 5.10.* (semver) Unaffected: 5.15.187 , ≤ 5.15.* (semver) Unaffected: 6.1.144 , ≤ 6.1.* (semver) Unaffected: 6.6.97 , ≤ 6.6.* (semver) Unaffected: 6.12.37 , ≤ 6.12.* (semver) Unaffected: 6.15.6 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix) |
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
guessed | |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
guessed |
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-07-30T09:12:29+00:00",
"cve": "CVE-2025-38393",
"id": "CVE-2025-38393",
"initial_release_date": "2025-07-25T00:00:00+00:00",
"product_status:fixed": "441",
"product_status:known_affected": "128",
"product_status:known_not_affected": "28",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38393.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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