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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-40219 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/1047ca2d816994f31e1475e63e0c0b7825599747 kernel.org
https://git.kernel.org/stable/c/3cddde484471c602bea04e6f384819d336a1ff84 kernel.org
https://git.kernel.org/stable/c/7c37920c96b85ef4255a7acc795e99e63dd38d59 kernel.org
https://git.kernel.org/stable/c/97c18f074ff1c12d016a0753072a3afdfa0b9611 kernel.org
https://git.kernel.org/stable/c/a5338e365c4559d7b4d7356116b0eb95b12e08d5 kernel.org
https://git.kernel.org/stable/c/bea1d373098b22d7142da48750ce5526096425bc kernel.org
https://git.kernel.org/stable/c/d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b kernel.org
https://git.kernel.org/stable/c/f3015627b6e9ddf85cfeaf42405b3c194dde2c36 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-40219
NVD Published Date:
12/04/2025
NVD Last Modified:
04/03/2026
Source:
kernel.org