FKIE_CVE-2026-72017

Vulnerability from fkie_nvd - Published: 2026-08-15 06:21 - Updated: 2026-08-23 13:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: net: macb: drop in-flight Tx SKBs on close The MACB driver has since forever leaked the outgoing SKBs that have not yet been marked as completed. They live in queue->tx_skb which gets freed without remorse nor checking. macb_free_consistent() gets called in a few codepaths, but only close will trigger the added expressions. In macb_open() and macb_alloc_consistent() failure cases, queues' tx_skb just got allocated and are empty.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/109241d9880488aafd8e104832b4d4859ad57244
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26b131b2d5b55a81ef6182769d28105a870c0eb2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/27f575836cfebbf872dec020428742b10650a955
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6124bd785073659c99385094657b77382ebce11b
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/cadence/macb_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655",
              "status": "affected",
              "version": "89e5785fc8a6b9eafd37f2318a9a76d479c796be",
              "versionType": "git"
            },
            {
              "lessThan": "6124bd785073659c99385094657b77382ebce11b",
              "status": "affected",
              "version": "89e5785fc8a6b9eafd37f2318a9a76d479c796be",
              "versionType": "git"
            },
            {
              "lessThan": "2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4",
              "status": "affected",
              "version": "89e5785fc8a6b9eafd37f2318a9a76d479c796be",
              "versionType": "git"
            },
            {
              "lessThan": "26b131b2d5b55a81ef6182769d28105a870c0eb2",
              "status": "affected",
              "version": "89e5785fc8a6b9eafd37f2318a9a76d479c796be",
              "versionType": "git"
            },
            {
              "lessThan": "109241d9880488aafd8e104832b4d4859ad57244",
              "status": "affected",
              "version": "89e5785fc8a6b9eafd37f2318a9a76d479c796be",
              "versionType": "git"
            },
            {
              "lessThan": "27f575836cfebbf872dec020428742b10650a955",
              "status": "affected",
              "version": "89e5785fc8a6b9eafd37f2318a9a76d479c796be",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/cadence/macb_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.20"
            },
            {
              "lessThan": "2.6.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.184",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: macb: drop in-flight Tx SKBs on close\n\nThe MACB driver has since forever leaked the outgoing SKBs that\nhave not yet been marked as completed. They live in queue-\u003etx_skb\nwhich gets freed without remorse nor checking.\n\nmacb_free_consistent() gets called in a few codepaths, but only close will\ntrigger the added expressions. In macb_open() and macb_alloc_consistent()\nfailure cases, queues\u0027 tx_skb just got allocated and are empty."
    }
  ],
  "id": "CVE-2026-72017",
  "lastModified": "2026-08-23T13:16:37.357",
  "metrics": {},
  "published": "2026-08-15T06:21:00.550",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/109241d9880488aafd8e104832b4d4859ad57244"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/26b131b2d5b55a81ef6182769d28105a870c0eb2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/27f575836cfebbf872dec020428742b10650a955"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6124bd785073659c99385094657b77382ebce11b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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