Vulnerability-Lookup

GHSA-V3CW-V56W-XQGW

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-23 15:32

Details

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.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-72017"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:21:00Z",
    "severity": null
  },
  "details": "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": "GHSA-v3cw-v56w-xqgw",
  "modified": "2026-08-23T15:32:58Z",
  "published": "2026-08-15T06:32:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72017"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/109241d9880488aafd8e104832b4d4859ad57244"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26b131b2d5b55a81ef6182769d28105a870c0eb2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/27f575836cfebbf872dec020428742b10650a955"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6124bd785073659c99385094657b77382ebce11b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-72017 (GCVE-0-2026-72017)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:51 – Updated: 2026-08-23 12:46

Title

net: macb: drop in-flight Tx SKBs on close

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.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/0e9797dc4ebdefe1b…
https://git.kernel.org/stable/c/6124bd785073659c9…
https://git.kernel.org/stable/c/2143fdc0ce27adbb1…
https://git.kernel.org/stable/c/26b131b2d5b55a81e…
https://git.kernel.org/stable/c/109241d9880488aaf…
https://git.kernel.org/stable/c/27f575836cfebbf87…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 89e5785fc8a6b9eafd37f2318a9a76d479c796be , < 0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655 (git) Affected: 89e5785fc8a6b9eafd37f2318a9a76d479c796be , < 6124bd785073659c99385094657b77382ebce11b (git) Affected: 89e5785fc8a6b9eafd37f2318a9a76d479c796be , < 2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4 (git) Affected: 89e5785fc8a6b9eafd37f2318a9a76d479c796be , < 26b131b2d5b55a81ef6182769d28105a870c0eb2 (git) Affected: 89e5785fc8a6b9eafd37f2318a9a76d479c796be , < 109241d9880488aafd8e104832b4d4859ad57244 (git) Affected: 89e5785fc8a6b9eafd37f2318a9a76d479c796be , < 27f575836cfebbf872dec020428742b10650a955 (git)
Linux	Linux	Affected: 2.6.20 Unaffected: 0 , < 2.6.20 (semver) Unaffected: 6.1.184 , ≤ 6.1.* (semver) Unaffected: 6.6.148 , ≤ 6.6.* (semver) Unaffected: 6.12.101 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.184",
                  "versionStartIncluding": "2.6.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.148",
                  "versionStartIncluding": "2.6.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.101",
                  "versionStartIncluding": "2.6.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "2.6.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "2.6.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "2.6.20",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-23T12:46:26.593Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0e9797dc4ebdefe1b7f931b1f92d5e98e5dbf655"
        },
        {
          "url": "https://git.kernel.org/stable/c/6124bd785073659c99385094657b77382ebce11b"
        },
        {
          "url": "https://git.kernel.org/stable/c/2143fdc0ce27adbb1caaa1a97e0bfb9f3750aef4"
        },
        {
          "url": "https://git.kernel.org/stable/c/26b131b2d5b55a81ef6182769d28105a870c0eb2"
        },
        {
          "url": "https://git.kernel.org/stable/c/109241d9880488aafd8e104832b4d4859ad57244"
        },
        {
          "url": "https://git.kernel.org/stable/c/27f575836cfebbf872dec020428742b10650a955"
        }
      ],
      "title": "net: macb: drop in-flight Tx SKBs on close",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72017",
    "datePublished": "2026-08-15T05:51:44.698Z",
    "dateReserved": "2026-08-09T03:40:39.900Z",
    "dateUpdated": "2026-08-23T12:46:26.593Z",
    "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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-V3CW-V56W-XQGW

CVE-2026-72017 (GCVE-0-2026-72017)

Tags

Sightings

Nomenclature