CVE-2025-40219

Advisory lineage Upstream: 0 Downstream: 48
Deferred
Published: 04 Dec 2025, 14:50
Last modified:14 Jul 2026, 12:43

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
0.17% LOW
0% probability +0.12%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Dec 2025, 14:50
Published
Vulnerability first disclosed
14 Jul 2026, 12:43
Last Modified
Vulnerability information updated

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.

EPSS Trends

Current EPSS score: 0.17%• Percentile: 7%

Affected Systems

  • linux•linux

    ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < 5c1cd7d405e94dc6cb320cc0cc092b74895b6ddf | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < 1e8a80290f964bdbad225221c8a1594c7e01c8fd | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < a645ca21de09e3137cbb224fa6c23cca873a1d01 | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < a24219172456f035d886857e265ca24c85b167c8 | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < 36039348bca77828bf06eae41b8f76e38cd15847 | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < 53154cd40ccf285f1d1c24367824082061d155bd | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < ee40e5db052d7c6f406fdb95ad639c894c74674c | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < 05703271c3cdcc0f2a8cf6ebdc45892b8ca83520 | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < 3cddde484471c602bea04e6f384819d336a1ff84 | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < 7c37920c96b85ef4255a7acc795e99e63dd38d59 | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < 1047ca2d816994f31e1475e63e0c0b7825599747 | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < 97c18f074ff1c12d016a0753072a3afdfa0b9611 | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < bea1d373098b22d7142da48750ce5526096425bc | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < f3015627b6e9ddf85cfeaf42405b3c194dde2c36 | ≥ 18f9e9d150fccfa747875df6f0a9f606740762b3, < a5338e365c4559d7b4d7356116b0eb95b12e08d5 | 5.0

References (18)