CVE-2025-40219
Estado: AplazadaSin puntuar—
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.
Leer descripción completaMostrar menos
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.
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.22%
- Percentil entre todas las CVEs puntuadas: 12
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/1047ca2d816994f31e1475e63e0c0b7825599747
- https://git.kernel.org/stable/c/3cddde484471c602bea04e6f384819d336a1ff84
- https://git.kernel.org/stable/c/7c37920c96b85ef4255a7acc795e99e63dd38d59
- https://git.kernel.org/stable/c/97c18f074ff1c12d016a0753072a3afdfa0b9611
- https://git.kernel.org/stable/c/a5338e365c4559d7b4d7356116b0eb95b12e08d5
- https://git.kernel.org/stable/c/bea1d373098b22d7142da48750ce5526096425bc
- https://git.kernel.org/stable/c/d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b
- https://git.kernel.org/stable/c/f3015627b6e9ddf85cfeaf42405b3c194dde2c36
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
JSON original (NVD)
Mostrar
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},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html",
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],
"vulnStatus": "Deferred",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/IOV: Fix race between SR-IOV enable/disable and hotplug\n\nCommit 05703271c3cd (\"PCI/IOV: Add PCI rescan-remove locking when\nenabling/disabling SR-IOV\") tried to fix a race between the VF removal\ninside sriov_del_vfs() and concurrent hot unplug by taking the PCI\nrescan/remove lock in sriov_del_vfs(). Similarly the PCI rescan/remove lock\nwas also taken in sriov_add_vfs() to protect addition of VFs.\n\nThis approach however causes deadlock on trying to remove PFs with SR-IOV\nenabled because PFs disable SR-IOV during removal and this removal happens\nunder the PCI rescan/remove lock. So the original fix had to be reverted.\n\nInstead of taking the PCI rescan/remove lock in sriov_add_vfs() and\nsriov_del_vfs(), fix the race that occurs with SR-IOV enable and disable vs\nhotplug higher up in the callchain by taking the lock in\nsriov_numvfs_store() before calling into the driver's sriov_configure()\ncallback."
}
],
"lastModified": "2026-07-14T13:17:53.473",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}