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.