Vulnerability-Lookup

GHSA-2MXH-QRPV-MFVX

Vulnerability from github – Published: 2026-05-08 15:31 – Updated: 2026-05-21 18:33

Details

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

mctp: i2c: fix skb memory leak in receive path

When 'midev->allow_rx' is false, the newly allocated skb isn't consumed by netif_rx(), it needs to free the skb directly.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43457"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-08T15:16:58Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmctp: i2c: fix skb memory leak in receive path\n\nWhen \u0027midev-\u003eallow_rx\u0027 is false, the newly allocated skb isn\u0027t consumed\nby netif_rx(), it needs to free the skb directly.",
  "id": "GHSA-2mxh-qrpv-mfvx",
  "modified": "2026-05-21T18:33:06Z",
  "published": "2026-05-08T15:31:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43457"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b1be322342a6b0085bf6ee52235e5ac9834ec25"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ec54187e1aa40a4cfa2b265e9a311179f24b98d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f81be2ab9d8e4744871bfb3e868ef413413829f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7900a43b0a314a645ca0a2adf45928dbc7001f4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-43457 (GCVE-0-2026-43457)

Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-11 22:24

Title

mctp: i2c: fix skb memory leak in receive path

Summary

In the Linux kernel, the following vulnerability has been resolved: mctp: i2c: fix skb memory leak in receive path When 'midev->allow_rx' is false, the newly allocated skb isn't consumed by netif_rx(), it needs to free the skb directly.

Severity

No CVSS data available.

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/0fb2adbdd5c03e8c9…
https://git.kernel.org/stable/c/d7900a43b0a314a64…
https://git.kernel.org/stable/c/9f81be2ab9d8e4744…
https://git.kernel.org/stable/c/1ec54187e1aa40a4c…
https://git.kernel.org/stable/c/1b1be322342a6b008…
https://git.kernel.org/stable/c/e3f5e0f22cfc2371e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < 0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb (git) Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < d7900a43b0a314a645ca0a2adf45928dbc7001f4 (git) Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < 9f81be2ab9d8e4744871bfb3e868ef413413829f (git) Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < 1ec54187e1aa40a4cfa2b265e9a311179f24b98d (git) Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < 1b1be322342a6b0085bf6ee52235e5ac9834ec25 (git) Affected: f5b8abf9fc3dacd7529d363e26fe8230935d65f8 , < e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69 (git)
Linux	Linux	Affected: 5.18 Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/mctp/mctp-i2c.c"
          ],
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          "vendor": "Linux",
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          "vendor": "Linux",
          "versions": [
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              "version": "5.18"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.78",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmctp: i2c: fix skb memory leak in receive path\n\nWhen \u0027midev-\u003eallow_rx\u0027 is false, the newly allocated skb isn\u0027t consumed\nby netif_rx(), it needs to free the skb directly."
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:24:57.488Z",
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          "url": "https://git.kernel.org/stable/c/d7900a43b0a314a645ca0a2adf45928dbc7001f4"
        },
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          "url": "https://git.kernel.org/stable/c/9f81be2ab9d8e4744871bfb3e868ef413413829f"
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          "url": "https://git.kernel.org/stable/c/e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69"
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    "datePublished": "2026-05-08T14:22:20.725Z",
    "dateReserved": "2026-05-01T14:12:56.010Z",
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    "state": "PUBLISHED"
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}

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-2MXH-QRPV-MFVX

CVE-2026-43457 (GCVE-0-2026-43457)

Tags

Sightings

Nomenclature