Vulnerability-Lookup

GHSA-RVWV-VG3X-5M3F

Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-97973"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:25Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-rvwv-vg3x-5m3f",
  "modified": "2026-09-25T12:31:31Z",
  "published": "2026-09-25T12:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97973"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23b6a44ffea1c54a4232aa86ee470b21422a8cc5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d059f390750152b9bd69df934198651b94fc26d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8558e3195664113c14a4d8fcf221b3caff41fed1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e92a45b872b035c79acde8dd0da096a72b61ff2f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-97973 (GCVE-0-2026-97973)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:23 – Updated: 2026-09-25 10:23

Title

net: macb: destroy the phylink instance on the probe error path

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.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/23b6a44ffea1c54a4…
https://git.kernel.org/stable/c/e92a45b872b035c79…
https://git.kernel.org/stable/c/8558e3195664113c1…
https://git.kernel.org/stable/c/7d059f390750152b9…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 , < 23b6a44ffea1c54a4232aa86ee470b21422a8cc5 (git) Affected: 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 , < e92a45b872b035c79acde8dd0da096a72b61ff2f (git) Affected: 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 , < 8558e3195664113c14a4d8fcf221b3caff41fed1 (git) Affected: 7897b071ac3b45a5788d084fc7f8a8ee9e5f07f0 , < 7d059f390750152b9bd69df934198651b94fc26d (git)
Linux	Linux	Affected: 5.5 Unaffected: 0 , < 5.5 (semver) Unaffected: 6.12.111 , ≤ 6.12.* (semver) Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2.7 , ≤ 7.2.* (semver) Unaffected: 7.3-rc3 , ≤ * (original_commit_for_fix)

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{
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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/net/ethernet/cadence/macb_main.c"
          ],
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              "versionType": "git"
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          "vendor": "Linux",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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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.

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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.
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GHSA-RVWV-VG3X-5M3F

CVE-2026-97973 (GCVE-0-2026-97973)

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