PCI/IOV: Fix race between SR-IOV enable/disable and hotplug
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.
CVE-2025-40219
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-40219
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
"lessThan": "3cddde484471c602bea04e6f384819d336a1ff84",
"versionType": "git"
},
{
"status": "affected",
"version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
"lessThan": "d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b",
"versionType": "git"
},
{
"status": "affected",
"version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
"lessThan": "7c37920c96b85ef4255a7acc795e99e63dd38d59",
"versionType": "git"
},
{
"status": "affected",
"version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
"lessThan": "1047ca2d816994f31e1475e63e0c0b7825599747",
"versionType": "git"
},
{
"status": "affected",
"version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
"lessThan": "97c18f074ff1c12d016a0753072a3afdfa0b9611",
"versionType": "git"
},
{
"status": "affected",
"version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
"lessThan": "bea1d373098b22d7142da48750ce5526096425bc",
"versionType": "git"
},
{
"status": "affected",
"version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
"lessThan": "f3015627b6e9ddf85cfeaf42405b3c194dde2c36",
"versionType": "git"
},
{
"status": "affected",
"version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
"lessThan": "a5338e365c4559d7b4d7356116b0eb95b12e08d5",
"versionType": "git"
}
],
"programFiles": [
"drivers/pci/iov.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.252",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.202",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.165",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.128",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.75",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.16",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.6",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/pci/iov.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-40219
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #27086 · Revision 1
- Added to Heist Feed
- Publisher date