Answer in brief
CVE-2025-39841 records a Unknown severity vulnerability in scsi: lpfc: Fix buffer free/clear order in deferred receive path. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (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-2025-39841 records a Unknown severity vulnerability in scsi: lpfc: Fix buffer free/clear order in deferred receive path. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (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/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=472e146d1cf3410a898b49834500fa9e33ac41a2 <ab34084f42ee06a9028d67c78feafb911d33d111 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <baa39f6ad79d372a6ce0aa639fbb2f1578479f57 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <95b63d15fce5c54a73bbf195e1aacb5a75b128e2 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <55658c7501467ca9ef3bd4453dd920010db8bc13 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <d96cc9a1b57725930c60b607423759d563b4d900 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <367cb5ffd8a8a4c85dc89f55e7fa7cc191425b11 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <897f64b01c1249ac730329b83f4f40bab71e86c7 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <9dba9a45c348e8460da97c450cddf70b2056deb3 | ab34084f42ee06a9028d67c78feafb911d33d111, baa39f6ad79d372a6ce0aa639fbb2f1578479f57, 95b63d15fce5c54a73bbf195e1aacb5a75b128e2, 55658c7501467ca9ef3bd4453dd920010db8bc13, d96cc9a1b57725930c60b607423759d563b4d900, 367cb5ffd8a8a4c85dc89f55e7fa7cc191425b11, 897f64b01c1249ac730329b83f4f40bab71e86c7, 9dba9a45c348e8460da97c450cddf70b2056deb3 |
| Linux/Linuxgeneric | 5.1 | Not reported |
| Siemens/RUGGEDCOM RST2428Pgeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCH328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM324generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM332generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRH334 (24 V DC, 8xFO, CC)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SIMATIC CN 4100generic | >=0 <V5.0 | V5.0 |
Published upstream
Sep 19, 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: scsi: lpfc: Fix buffer free/clear order in deferred receive path Fix a use-after-free window by correcting the buffer release sequence in the deferred receive path. The code freed the RQ buffer first and only then cleared the context pointer under the lock. Concurrent paths (e.g., ABTS and the repost path) also inspect and release the same pointer under the lock, so the old order could lead to double-free/UAF. Note that the repost path already uses the correct pattern: detach the pointer under the lock, then free it after dropping the lock. The deferred path should do the same.
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/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=472e146d1cf3410a898b49834500fa9e33ac41a2 <ab34084f42ee06a9028d67c78feafb911d33d111 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <baa39f6ad79d372a6ce0aa639fbb2f1578479f57 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <95b63d15fce5c54a73bbf195e1aacb5a75b128e2 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <55658c7501467ca9ef3bd4453dd920010db8bc13 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <d96cc9a1b57725930c60b607423759d563b4d900 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <367cb5ffd8a8a4c85dc89f55e7fa7cc191425b11 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <897f64b01c1249ac730329b83f4f40bab71e86c7 || >=472e146d1cf3410a898b49834500fa9e33ac41a2 <9dba9a45c348e8460da97c450cddf70b2056deb3 | ab34084f42ee06a9028d67c78feafb911d33d111, baa39f6ad79d372a6ce0aa639fbb2f1578479f57, 95b63d15fce5c54a73bbf195e1aacb5a75b128e2, 55658c7501467ca9ef3bd4453dd920010db8bc13, d96cc9a1b57725930c60b607423759d563b4d900, 367cb5ffd8a8a4c85dc89f55e7fa7cc191425b11, 897f64b01c1249ac730329b83f4f40bab71e86c7, 9dba9a45c348e8460da97c450cddf70b2056deb3 |
| Linux/Linuxgeneric | 5.1 | Not reported |
| Siemens/RUGGEDCOM RST2428Pgeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCH328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM324generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM332generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRH334 (24 V DC, 8xFO, CC)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SIMATIC CN 4100generic | >=0 <V5.0 | V5.0 |
Published upstream
Sep 19, 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: scsi: lpfc: Fix buffer free/clear order in deferred receive path Fix a use-after-free window by correcting the buffer release sequence in the deferred receive path. The code freed the RQ buffer first and only then cleared the context pointer under the lock. Concurrent paths (e.g., ABTS and the repost path) also inspect and release the same pointer under the lock, so the old order could lead to double-free/UAF. Note that the repost path already uses the correct pattern: detach the pointer under the lock, then free it after dropping the lock. The deferred path should do the same.
Quoted source text, attributed separately from HOL analysis.