CVE-2025-40219 (GCVE-0-2025-40219)

Vulnerability from cvelistv5 – Published: 2025-12-04 14:50 – Updated: 2026-05-11 21:45
VLAI?
Title
PCI/IOV: Fix race between SR-IOV enable/disable and hotplug
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 18f9e9d150fccfa747875df6f0a9f606740762b3 , < 3cddde484471c602bea04e6f384819d336a1ff84 (git)
Affected: 18f9e9d150fccfa747875df6f0a9f606740762b3 , < d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b (git)
Affected: 18f9e9d150fccfa747875df6f0a9f606740762b3 , < 7c37920c96b85ef4255a7acc795e99e63dd38d59 (git)
Affected: 18f9e9d150fccfa747875df6f0a9f606740762b3 , < 1047ca2d816994f31e1475e63e0c0b7825599747 (git)
Affected: 18f9e9d150fccfa747875df6f0a9f606740762b3 , < 97c18f074ff1c12d016a0753072a3afdfa0b9611 (git)
Affected: 18f9e9d150fccfa747875df6f0a9f606740762b3 , < bea1d373098b22d7142da48750ce5526096425bc (git)
Affected: 18f9e9d150fccfa747875df6f0a9f606740762b3 , < f3015627b6e9ddf85cfeaf42405b3c194dde2c36 (git)
Affected: 18f9e9d150fccfa747875df6f0a9f606740762b3 , < a5338e365c4559d7b4d7356116b0eb95b12e08d5 (git)
Create a notification for this product.
Linux Linux Affected: 5.0
Unaffected: 0 , < 5.0 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/iov.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3cddde484471c602bea04e6f384819d336a1ff84",
              "status": "affected",
              "version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
              "versionType": "git"
            },
            {
              "lessThan": "d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b",
              "status": "affected",
              "version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
              "versionType": "git"
            },
            {
              "lessThan": "7c37920c96b85ef4255a7acc795e99e63dd38d59",
              "status": "affected",
              "version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
              "versionType": "git"
            },
            {
              "lessThan": "1047ca2d816994f31e1475e63e0c0b7825599747",
              "status": "affected",
              "version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
              "versionType": "git"
            },
            {
              "lessThan": "97c18f074ff1c12d016a0753072a3afdfa0b9611",
              "status": "affected",
              "version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
              "versionType": "git"
            },
            {
              "lessThan": "bea1d373098b22d7142da48750ce5526096425bc",
              "status": "affected",
              "version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
              "versionType": "git"
            },
            {
              "lessThan": "f3015627b6e9ddf85cfeaf42405b3c194dde2c36",
              "status": "affected",
              "version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
              "versionType": "git"
            },
            {
              "lessThan": "a5338e365c4559d7b4d7356116b0eb95b12e08d5",
              "status": "affected",
              "version": "18f9e9d150fccfa747875df6f0a9f606740762b3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/iov.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.0"
            },
            {
              "lessThan": "5.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.252",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.202",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.252",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.202",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.165",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.128",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.16",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.6",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0027s sriov_configure()\ncallback."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:45:05.429Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3cddde484471c602bea04e6f384819d336a1ff84"
        },
        {
          "url": "https://git.kernel.org/stable/c/d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b"
        },
        {
          "url": "https://git.kernel.org/stable/c/7c37920c96b85ef4255a7acc795e99e63dd38d59"
        },
        {
          "url": "https://git.kernel.org/stable/c/1047ca2d816994f31e1475e63e0c0b7825599747"
        },
        {
          "url": "https://git.kernel.org/stable/c/97c18f074ff1c12d016a0753072a3afdfa0b9611"
        },
        {
          "url": "https://git.kernel.org/stable/c/bea1d373098b22d7142da48750ce5526096425bc"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3015627b6e9ddf85cfeaf42405b3c194dde2c36"
        },
        {
          "url": "https://git.kernel.org/stable/c/a5338e365c4559d7b4d7356116b0eb95b12e08d5"
        }
      ],
      "title": "PCI/IOV: Fix race between SR-IOV enable/disable and hotplug",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40219",
    "datePublished": "2025-12-04T14:50:42.996Z",
    "dateReserved": "2025-04-16T07:20:57.179Z",
    "dateUpdated": "2026-05-11T21:45:05.429Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-40219",
      "date": "2026-05-20",
      "epss": "0.00076",
      "percentile": "0.22644"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40219\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-04T15:15:57.790\",\"lastModified\":\"2026-04-03T16:16:22.607\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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\u0027s sriov_configure()\\ncallback.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1047ca2d816994f31e1475e63e0c0b7825599747\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3cddde484471c602bea04e6f384819d336a1ff84\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7c37920c96b85ef4255a7acc795e99e63dd38d59\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/97c18f074ff1c12d016a0753072a3afdfa0b9611\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a5338e365c4559d7b4d7356116b0eb95b12e08d5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bea1d373098b22d7142da48750ce5526096425bc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d7673ac466eca37ec3e6b7cc9ccdb06de3304e9b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f3015627b6e9ddf85cfeaf42405b3c194dde2c36\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.