CVE-2026-97973 (GCVE-0-2026-97973)
Vulnerability from cvelistv5
Published
2026-09-25 10:23
Modified
2026-10-19 09:11
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: macb: destroy the phylink instance on the probe error path macb_mii_init() creates a phylink instance on both of its success paths, but the probe unwind frees the netdev without destroying it, so a failing macb_alloc_tieoff() or register_netdev() leaks the instance. Destroy it at err_out_unregister_mdio, which is only reachable once macb_mii_init() has succeeded, so bp->phylink is valid there.
References
Impacted products
Vendor Product Version
Linux Linux Version: 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0
Version: 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0
Version: 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0
Version: 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0
Version: 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0
Version: 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/cadence/macb_main.c"
          ],
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          "product": "Linux",
          "programFiles": [
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          ],
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          "vendor": "Linux",
          "versions": [
            {
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              "version": "0",
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              "version": "6.1.189",
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              "version": "6.6.158",
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              "version": "6.12.111",
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            },
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              "version": "6.18.53",
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              "version": "7.2.7",
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              "lessThanOrEqual": "*",
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              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.189",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
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              ],
              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: macb: destroy the phylink instance on the probe error path\n\nmacb_mii_init() creates a phylink instance on both of its success paths,\nbut the probe unwind frees the netdev without destroying it, so a failing\nmacb_alloc_tieoff() or register_netdev() leaks the instance.\n\nDestroy it at err_out_unregister_mdio, which is only reachable once\nmacb_mii_init() has succeeded, so bp-\u003ephylink is valid there."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:11:39.063Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0112aa02c7847314be599d68783d50c7e228a694"
        },
        {
          "url": "https://git.kernel.org/stable/c/c1de1e7b51ab2531f564b39b51998c3d71caccd7"
        },
        {
          "url": "https://git.kernel.org/stable/c/23b6a44ffea1c54a4232aa86ee470b21422a8cc5"
        },
        {
          "url": "https://git.kernel.org/stable/c/e92a45b872b035c79acde8dd0da096a72b61ff2f"
        },
        {
          "url": "https://git.kernel.org/stable/c/8558e3195664113c14a4d8fcf221b3caff41fed1"
        },
        {
          "url": "https://git.kernel.org/stable/c/7d059f390750152b9bd69df934198651b94fc26d"
        }
      ],
      "title": "net: macb: destroy the phylink instance on the probe error path",
      "x_generator": {
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97973",
    "datePublished": "2026-09-25T10:23:12.759Z",
    "dateReserved": "2026-09-25T10:18:58.207Z",
    "dateUpdated": "2026-10-19T09:11:39.063Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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