fkie_nvd - fkie_cve-2025-40133

fkie_cve-2025-40133

Vulnerability from fkie_nvd

Published

2025-11-12 11:15

Modified

2025-11-12 16:19

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable(). mptcp_active_enable() is called from subflow_finish_connect(), which is icsk->icsk_af_ops->sk_rx_dst_set() and it's not always under RCU. Using sk_dst_get(sk)->dev could trigger UAF. Let's use __sk_dst_get() and dst_dev_rcu().

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/893c49a78d9f85e4b8081b908fb7c407d018106a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ad16235c9d3ef7ec17c109ff39b7504f49d17072
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cc976ec9e38bb79409de3261ba1dbb6868e2a53e

Impacted products

	Vendor	Product	Version

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().\n\nmptcp_active_enable() is called from subflow_finish_connect(),\nwhich is icsk-\u003eicsk_af_ops-\u003esk_rx_dst_set() and it\u0027s not always\nunder RCU.\n\nUsing sk_dst_get(sk)-\u003edev could trigger UAF.\n\nLet\u0027s use __sk_dst_get() and dst_dev_rcu()."
    }
  ],
  "id": "CVE-2025-40133",
  "lastModified": "2025-11-12T16:19:12.850",
  "metrics": {},
  "published": "2025-11-12T11:15:42.993",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/893c49a78d9f85e4b8081b908fb7c407d018106a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ad16235c9d3ef7ec17c109ff39b7504f49d17072"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cc976ec9e38bb79409de3261ba1dbb6868e2a53e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

CVE-2025-40133 (GCVE-0-2025-40133)

Vulnerability from cvelistv5

Published

2025-11-12 10:23

Modified

2025-11-12 10:23

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable(). mptcp_active_enable() is called from subflow_finish_connect(), which is icsk->icsk_af_ops->sk_rx_dst_set() and it's not always under RCU. Using sk_dst_get(sk)->dev could trigger UAF. Let's use __sk_dst_get() and dst_dev_rcu().

References

URL

Tags

	https://git.kernel.org/stable/c/ad16235c9d3ef7ec17c109ff39b7504f49d17072
	https://git.kernel.org/stable/c/cc976ec9e38bb79409de3261ba1dbb6868e2a53e
	https://git.kernel.org/stable/c/893c49a78d9f85e4b8081b908fb7c407d018106a

Impacted products

Vendor

Product

Version

Version: 27069e7cb3d1cea9377069266acf19b9cc5ad0ae
Version: 27069e7cb3d1cea9377069266acf19b9cc5ad0ae
Version: 27069e7cb3d1cea9377069266acf19b9cc5ad0ae

Version: 6.12

Show details on NVD website

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mptcp/ctrl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ad16235c9d3ef7ec17c109ff39b7504f49d17072",
              "status": "affected",
              "version": "27069e7cb3d1cea9377069266acf19b9cc5ad0ae",
              "versionType": "git"
            },
            {
              "lessThan": "cc976ec9e38bb79409de3261ba1dbb6868e2a53e",
              "status": "affected",
              "version": "27069e7cb3d1cea9377069266acf19b9cc5ad0ae",
              "versionType": "git"
            },
            {
              "lessThan": "893c49a78d9f85e4b8081b908fb7c407d018106a",
              "status": "affected",
              "version": "27069e7cb3d1cea9377069266acf19b9cc5ad0ae",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mptcp/ctrl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.55",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.3",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18-rc1",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().\n\nmptcp_active_enable() is called from subflow_finish_connect(),\nwhich is icsk-\u003eicsk_af_ops-\u003esk_rx_dst_set() and it\u0027s not always\nunder RCU.\n\nUsing sk_dst_get(sk)-\u003edev could trigger UAF.\n\nLet\u0027s use __sk_dst_get() and dst_dev_rcu()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-11-12T10:23:22.498Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ad16235c9d3ef7ec17c109ff39b7504f49d17072"
        },
        {
          "url": "https://git.kernel.org/stable/c/cc976ec9e38bb79409de3261ba1dbb6868e2a53e"
        },
        {
          "url": "https://git.kernel.org/stable/c/893c49a78d9f85e4b8081b908fb7c407d018106a"
        }
      ],
      "title": "mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40133",
    "datePublished": "2025-11-12T10:23:22.498Z",
    "dateReserved": "2025-04-16T07:20:57.170Z",
    "dateUpdated": "2025-11-12T10:23:22.498Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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