Vulnerability-Lookup

GHSA-CMF4-RM73-RFHX

Vulnerability from github – Published: 2026-05-28 12:30 – Updated: 2026-05-28 12:30

Details

In the Linux kernel, the following vulnerability has been resolved:

mptcp: pm: ADD_ADDR rtx: fix potential data-race

This mptcp_pm_add_timer() helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bh_lock_sock().

If the socket is in use, retry again soon after, similar to what is done with the keepalive timer.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46137"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T10:16:29Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: ADD_ADDR rtx: fix potential data-race\n\nThis mptcp_pm_add_timer() helper is executed as a timer callback in\nsoftirq context. To avoid any data races, the socket lock needs to be\nheld with bh_lock_sock().\n\nIf the socket is in use, retry again soon after, similar to what is done\nwith the keepalive timer.",
  "id": "GHSA-cmf4-rm73-rfhx",
  "modified": "2026-05-28T12:30:30Z",
  "published": "2026-05-28T12:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46137"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/013dcdc1961543b9a3433466bc8c79a2f4ca75b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ad56e434199ca24a812bb353667aa1c3860f513"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5cd6e0ad79d2615264f63929f8b457ad97ae550d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc3c0399361efaaf7ae64262eb3f70829b1189c6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-46137 (GCVE-0-2026-46137)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:35 – Updated: 2026-05-28 09:35

Title

mptcp: pm: ADD_ADDR rtx: fix potential data-race

Summary

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential data-race This mptcp_pm_add_timer() helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bh_lock_sock(). If the socket is in use, retry again soon after, similar to what is done with the keepalive timer.

Severity

No CVSS data available.

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/013dcdc1961543b9a…
https://git.kernel.org/stable/c/6e4710d7d8782cb61…
https://git.kernel.org/stable/c/2ad56e434199ca24a…
https://git.kernel.org/stable/c/cc3c0399361efaaf7…
https://git.kernel.org/stable/c/5cd6e0ad79d261526…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 00cfd77b9063dcdf3628a7087faba60de85a9cc8 , < 013dcdc1961543b9a3433466bc8c79a2f4ca75b5 (git) Affected: 00cfd77b9063dcdf3628a7087faba60de85a9cc8 , < 6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3 (git) Affected: 00cfd77b9063dcdf3628a7087faba60de85a9cc8 , < 2ad56e434199ca24a812bb353667aa1c3860f513 (git) Affected: 00cfd77b9063dcdf3628a7087faba60de85a9cc8 , < cc3c0399361efaaf7ae64262eb3f70829b1189c6 (git) Affected: 00cfd77b9063dcdf3628a7087faba60de85a9cc8 , < 5cd6e0ad79d2615264f63929f8b457ad97ae550d (git)
Linux	Linux	Affected: 5.10 Unaffected: 0 , < 5.10 (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.30 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1-rc3 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mptcp/pm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "013dcdc1961543b9a3433466bc8c79a2f4ca75b5",
              "status": "affected",
              "version": "00cfd77b9063dcdf3628a7087faba60de85a9cc8",
              "versionType": "git"
            },
            {
              "lessThan": "6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3",
              "status": "affected",
              "version": "00cfd77b9063dcdf3628a7087faba60de85a9cc8",
              "versionType": "git"
            },
            {
              "lessThan": "2ad56e434199ca24a812bb353667aa1c3860f513",
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              "versionType": "git"
            },
            {
              "lessThan": "cc3c0399361efaaf7ae64262eb3f70829b1189c6",
              "status": "affected",
              "version": "00cfd77b9063dcdf3628a7087faba60de85a9cc8",
              "versionType": "git"
            },
            {
              "lessThan": "5cd6e0ad79d2615264f63929f8b457ad97ae550d",
              "status": "affected",
              "version": "00cfd77b9063dcdf3628a7087faba60de85a9cc8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mptcp/pm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "lessThan": "5.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "5.10",
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                },
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                },
                {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: ADD_ADDR rtx: fix potential data-race\n\nThis mptcp_pm_add_timer() helper is executed as a timer callback in\nsoftirq context. To avoid any data races, the socket lock needs to be\nheld with bh_lock_sock().\n\nIf the socket is in use, retry again soon after, similar to what is done\nwith the keepalive timer."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-28T09:35:53.628Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/cc3c0399361efaaf7ae64262eb3f70829b1189c6"
        },
        {
          "url": "https://git.kernel.org/stable/c/5cd6e0ad79d2615264f63929f8b457ad97ae550d"
        }
      ],
      "title": "mptcp: pm: ADD_ADDR rtx: fix potential data-race",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46137",
    "datePublished": "2026-05-28T09:35:53.628Z",
    "dateReserved": "2026-05-13T15:03:33.100Z",
    "dateUpdated": "2026-05-28T09:35:53.628Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-CMF4-RM73-RFHX

CVE-2026-46137 (GCVE-0-2026-46137)

Tags

Sightings

Nomenclature