CVE-2026-43457 (GCVE-0-2026-43457)
Vulnerability from cvelistv5
Published
2026-05-08 14:22
Modified
2026-05-11 22:24
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: f5b8abf9fc3dacd7529d363e26fe8230935d65f8
Version: f5b8abf9fc3dacd7529d363e26fe8230935d65f8
Version: f5b8abf9fc3dacd7529d363e26fe8230935d65f8
Version: f5b8abf9fc3dacd7529d363e26fe8230935d65f8
Version: f5b8abf9fc3dacd7529d363e26fe8230935d65f8
Version: f5b8abf9fc3dacd7529d363e26fe8230935d65f8
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/mctp/mctp-i2c.c"
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        },
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.6.*",
              "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": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.167",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:24:57.488Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0fb2adbdd5c03e8c9ebcdc48afd414b2724c85eb"
        },
        {
          "url": "https://git.kernel.org/stable/c/d7900a43b0a314a645ca0a2adf45928dbc7001f4"
        },
        {
          "url": "https://git.kernel.org/stable/c/9f81be2ab9d8e4744871bfb3e868ef413413829f"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ec54187e1aa40a4cfa2b265e9a311179f24b98d"
        },
        {
          "url": "https://git.kernel.org/stable/c/1b1be322342a6b0085bf6ee52235e5ac9834ec25"
        },
        {
          "url": "https://git.kernel.org/stable/c/e3f5e0f22cfc2371e7471c9fd5b4da78f9df7c69"
        }
      ],
      "title": "mctp: i2c: fix skb memory leak in receive path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43457",
    "datePublished": "2026-05-08T14:22:20.725Z",
    "dateReserved": "2026-05-01T14:12:56.010Z",
    "dateUpdated": "2026-05-11T22:24:57.488Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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