CVE-2025-40219PCI/IOV: Fix race between SR-IOV enable/disable and hotplug
- —Not scoredno CVSS score yet
- 0.24%Exploitation in 30 daysEPSS · top 85% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 8 months later
· 8 months later
Published
- 11 months later
· 11 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 18f9e9d150fccfa747875df6f0a9f606740762b3 – < 3cddde484471c602bea04e6f384819d336a1ff84
- affected 18f9e9d150fccfa747875df6f0a9f606740762b3 – < d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b
- affected 18f9e9d150fccfa747875df6f0a9f606740762b3 – < 7c37920c96b85ef4255a7acc795e99e63dd38d59
- affected 18f9e9d150fccfa747875df6f0a9f606740762b3 – < 1047ca2d816994f31e1475e63e0c0b7825599747
- affected 18f9e9d150fccfa747875df6f0a9f606740762b3 – < 97c18f074ff1c12d016a0753072a3afdfa0b9611
- affected 18f9e9d150fccfa747875df6f0a9f606740762b3 – < bea1d373098b22d7142da48750ce5526096425bc
- affected 18f9e9d150fccfa747875df6f0a9f606740762b3 – < f3015627b6e9ddf85cfeaf42405b3c194dde2c36
- affected 18f9e9d150fccfa747875df6f0a9f606740762b3 – < a5338e365c4559d7b4d7356116b0eb95b12e08d5
- affected 5.0
- unaffected < 5.0
- unaffected 5.10.252 – ≤ 5.10.*
- unaffected 5.15.202 – ≤ 5.15.*
- unaffected 6.1.165 – ≤ 6.1.*
- unaffected 6.6.128 – ≤ 6.6.*
- unaffected 6.12.75 – ≤ 6.12.*
- unaffected 6.18.16 – ≤ 6.18.*
- unaffected 6.19.6 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References11
- https://git.kernel.org/stable/c/3cddde484471c602bea04e6f384819d336a1ff84 (opens in a new tab)
- https://git.kernel.org/stable/c/d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b (opens in a new tab)
- https://git.kernel.org/stable/c/7c37920c96b85ef4255a7acc795e99e63dd38d59 (opens in a new tab)
- https://git.kernel.org/stable/c/1047ca2d816994f31e1475e63e0c0b7825599747 (opens in a new tab)
- https://git.kernel.org/stable/c/97c18f074ff1c12d016a0753072a3afdfa0b9611 (opens in a new tab)
- https://git.kernel.org/stable/c/bea1d373098b22d7142da48750ce5526096425bc (opens in a new tab)
- https://git.kernel.org/stable/c/f3015627b6e9ddf85cfeaf42405b3c194dde2c36 (opens in a new tab)
- https://git.kernel.org/stable/c/a5338e365c4559d7b4d7356116b0eb95b12e08d5 (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-201184 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-40219)Record last updated .