{"id":"CVE-2025-40219","revision":null,"records":[{"revision":"16be403399394e9496937ae6a4505338","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-40219","aliases":[],"title":"PCI/IOV: Fix race between SR-IOV enable/disable and hotplug","description":"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.","state":0,"publishedAt":"2025-12-04T14:50:42.996+00:00","modifiedAt":"2026-10-15T01:09:04.855+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/pci/iov.c\"\n ],\n \"versions\": [\n {\n \"version\": \"18f9e9d150fccfa747875df6f0a9f606740762b3\",\n \"lessThan\": \"3cddde484471c602bea04e6f384819d336a1ff84\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"18f9e9d150fccfa747875df6f0a9f606740762b3\",\n \"lessThan\": \"d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"18f9e9d150fccfa747875df6f0a9f606740762b3\",\n \"lessThan\": \"7c37920c96b85ef4255a7acc795e99e63dd38d59\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"18f9e9d150fccfa747875df6f0a9f606740762b3\",\n \"lessThan\": \"1047ca2d816994f31e1475e63e0c0b7825599747\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"18f9e9d150fccfa747875df6f0a9f606740762b3\",\n \"lessThan\": \"97c18f074ff1c12d016a0753072a3afdfa0b9611\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"18f9e9d150fccfa747875df6f0a9f606740762b3\",\n \"lessThan\": \"bea1d373098b22d7142da48750ce5526096425bc\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"18f9e9d150fccfa747875df6f0a9f606740762b3\",\n \"lessThan\": \"f3015627b6e9ddf85cfeaf42405b3c194dde2c36\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"18f9e9d150fccfa747875df6f0a9f606740762b3\",\n \"lessThan\": \"a5338e365c4559d7b4d7356116b0eb95b12e08d5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/pci/iov.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.0\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.0\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.252\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.202\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.165\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.128\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.75\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.16\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.19.6\",\n \"lessThanOrEqual\": \"6.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.0\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/3cddde484471c602bea04e6f384819d336a1ff84","https://git.kernel.org/stable/c/d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b","https://git.kernel.org/stable/c/7c37920c96b85ef4255a7acc795e99e63dd38d59","https://git.kernel.org/stable/c/1047ca2d816994f31e1475e63e0c0b7825599747","https://git.kernel.org/stable/c/97c18f074ff1c12d016a0753072a3afdfa0b9611","https://git.kernel.org/stable/c/bea1d373098b22d7142da48750ce5526096425bc","https://git.kernel.org/stable/c/f3015627b6e9ddf85cfeaf42405b3c194dde2c36","https://git.kernel.org/stable/c/a5338e365c4559d7b4d7356116b0eb95b12e08d5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-40219","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-40219","identifiers":["CVE-2025-40219"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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