Answer in brief
CVE-2025-38393 records a Unknown severity vulnerability in NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2025-38393 records a Unknown severity vulnerability in NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8acc3e228e1c90bd410f73597a4549e0409f22d6 <08287df60bac5b008b6bcdb03053988335d3d282 || >=ec23a86e060cbe30b62eb2955adc97c92d80cc4c <8846fd02c98da8b79e6343a20e6071be6f372180 || >=880265c77ac415090090d1fe72a188fee71cb458 <e4b13885e7ef1e64e45268feef1e5f0707c47e72 || >=880265c77ac415090090d1fe72a188fee71cb458 <8ca65fa71024a1767a59ffbc6a6e2278af84735e || >=880265c77ac415090090d1fe72a188fee71cb458 <864a54c1243ed3ca60baa4bc492dede1361f4c83 || >=880265c77ac415090090d1fe72a188fee71cb458 <1f4da20080718f258e189a2c5f515385fa393da6 || >=880265c77ac415090090d1fe72a188fee71cb458 <c01776287414ca43412d1319d2877cbad65444ac || f133819e24e78f3aaaa00e9fa2b816d5f73fd172 || >=5.10.124 <5.10.240 || >=5.15.49 <5.15.187 || >=5.18.6 <5.19 | 08287df60bac5b008b6bcdb03053988335d3d282, 8846fd02c98da8b79e6343a20e6071be6f372180, e4b13885e7ef1e64e45268feef1e5f0707c47e72, 8ca65fa71024a1767a59ffbc6a6e2278af84735e, 864a54c1243ed3ca60baa4bc492dede1361f4c83, 1f4da20080718f258e189a2c5f515385fa393da6, c01776287414ca43412d1319d2877cbad65444ac, 5.10.240, 5.15.187, 5.19 |
| Linux/Linuxgeneric | 5.19 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
Published upstream
Jul 25, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8acc3e228e1c90bd410f73597a4549e0409f22d6 <08287df60bac5b008b6bcdb03053988335d3d282 || >=ec23a86e060cbe30b62eb2955adc97c92d80cc4c <8846fd02c98da8b79e6343a20e6071be6f372180 || >=880265c77ac415090090d1fe72a188fee71cb458 <e4b13885e7ef1e64e45268feef1e5f0707c47e72 || >=880265c77ac415090090d1fe72a188fee71cb458 <8ca65fa71024a1767a59ffbc6a6e2278af84735e || >=880265c77ac415090090d1fe72a188fee71cb458 <864a54c1243ed3ca60baa4bc492dede1361f4c83 || >=880265c77ac415090090d1fe72a188fee71cb458 <1f4da20080718f258e189a2c5f515385fa393da6 || >=880265c77ac415090090d1fe72a188fee71cb458 <c01776287414ca43412d1319d2877cbad65444ac || f133819e24e78f3aaaa00e9fa2b816d5f73fd172 || >=5.10.124 <5.10.240 || >=5.15.49 <5.15.187 || >=5.18.6 <5.19 | 08287df60bac5b008b6bcdb03053988335d3d282, 8846fd02c98da8b79e6343a20e6071be6f372180, e4b13885e7ef1e64e45268feef1e5f0707c47e72, 8ca65fa71024a1767a59ffbc6a6e2278af84735e, 864a54c1243ed3ca60baa4bc492dede1361f4c83, 1f4da20080718f258e189a2c5f515385fa393da6, c01776287414ca43412d1319d2877cbad65444ac, 5.10.240, 5.15.187, 5.19 |
| Linux/Linuxgeneric | 5.19 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
Published upstream
Jul 25, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.