Answer in brief
CVE-2025-40219 records a Unknown severity vulnerability in PCI/IOV: Fix race between SR-IOV enable/disable and hotplug. 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 1518-4 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-2025-40219 records a Unknown severity vulnerability in PCI/IOV: Fix race between SR-IOV enable/disable and hotplug. 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 1518-4 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 1518-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=18f9e9d150fccfa747875df6f0a9f606740762b3 <3cddde484471c602bea04e6f384819d336a1ff84 || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <7c37920c96b85ef4255a7acc795e99e63dd38d59 || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <1047ca2d816994f31e1475e63e0c0b7825599747 || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <97c18f074ff1c12d016a0753072a3afdfa0b9611 || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <bea1d373098b22d7142da48750ce5526096425bc || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <f3015627b6e9ddf85cfeaf42405b3c194dde2c36 || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <a5338e365c4559d7b4d7356116b0eb95b12e08d5 | 3cddde484471c602bea04e6f384819d336a1ff84, d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b, 7c37920c96b85ef4255a7acc795e99e63dd38d59, 1047ca2d816994f31e1475e63e0c0b7825599747, 97c18f074ff1c12d016a0753072a3afdfa0b9611, bea1d373098b22d7142da48750ce5526096425bc, f3015627b6e9ddf85cfeaf42405b3c194dde2c36, a5338e365c4559d7b4d7356116b0eb95b12e08d5 |
| Linux/Linuxgeneric | 5.0 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
Published upstream
Dec 4, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 14, 2026
In the Linux kernel, the following vulnerability has been resolved: PCI/IOV: Fix race between SR-IOV enable/disable and hotplug Commit 05703271c3cd ("PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV") tried to fix a race between the VF removal inside sriov_del_vfs() and concurrent hot unplug by taking the PCI rescan/remove lock in sriov_del_vfs(). Similarly the PCI rescan/remove lock was also taken in sriov_add_vfs() to protect addition of VFs. This approach however causes deadlock on trying to remove PFs with SR-IOV enabled because PFs disable SR-IOV during removal and this removal happens under the PCI rescan/remove lock. So the original fix had to be reverted. Instead of taking the PCI rescan/remove lock in sriov_add_vfs() and sriov_del_vfs(), fix the race that occurs with SR-IOV enable and disable vs hotplug higher up in the callchain by taking the lock in sriov_numvfs_store() before calling into the driver's sriov_configure() callback.
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 1518-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=18f9e9d150fccfa747875df6f0a9f606740762b3 <3cddde484471c602bea04e6f384819d336a1ff84 || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <7c37920c96b85ef4255a7acc795e99e63dd38d59 || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <1047ca2d816994f31e1475e63e0c0b7825599747 || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <97c18f074ff1c12d016a0753072a3afdfa0b9611 || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <bea1d373098b22d7142da48750ce5526096425bc || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <f3015627b6e9ddf85cfeaf42405b3c194dde2c36 || >=18f9e9d150fccfa747875df6f0a9f606740762b3 <a5338e365c4559d7b4d7356116b0eb95b12e08d5 | 3cddde484471c602bea04e6f384819d336a1ff84, d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b, 7c37920c96b85ef4255a7acc795e99e63dd38d59, 1047ca2d816994f31e1475e63e0c0b7825599747, 97c18f074ff1c12d016a0753072a3afdfa0b9611, bea1d373098b22d7142da48750ce5526096425bc, f3015627b6e9ddf85cfeaf42405b3c194dde2c36, a5338e365c4559d7b4d7356116b0eb95b12e08d5 |
| Linux/Linuxgeneric | 5.0 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
Published upstream
Dec 4, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 14, 2026
In the Linux kernel, the following vulnerability has been resolved: PCI/IOV: Fix race between SR-IOV enable/disable and hotplug Commit 05703271c3cd ("PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV") tried to fix a race between the VF removal inside sriov_del_vfs() and concurrent hot unplug by taking the PCI rescan/remove lock in sriov_del_vfs(). Similarly the PCI rescan/remove lock was also taken in sriov_add_vfs() to protect addition of VFs. This approach however causes deadlock on trying to remove PFs with SR-IOV enabled because PFs disable SR-IOV during removal and this removal happens under the PCI rescan/remove lock. So the original fix had to be reverted. Instead of taking the PCI rescan/remove lock in sriov_add_vfs() and sriov_del_vfs(), fix the race that occurs with SR-IOV enable and disable vs hotplug higher up in the callchain by taking the lock in sriov_numvfs_store() before calling into the driver's sriov_configure() callback.
Quoted source text, attributed separately from HOL analysis.