clk: qcom: gdsc: tear down per-domain genpds in gdsc_unregister()

{
  "id": "52f2de40191bae44b26c3c63973e871da3c20c6e42af618760d2c1a3020c9925",
  "url": "https://osv.dev/vulnerability/CVE-2026-93145",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "clk: qcom: gdsc: tear down per-domain genpds in gdsc_unregister()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: clk: qcom: gdsc: tear down per-domain genpds in gdsc_unregister() gdsc_unregister() removes the OF provider entry and tears down the parent/subdomain wiring, but never calls pm_genpd_remove() on the individual generic_pm_domain structures registered by gdsc_init(): void gdsc_unregister(struct gdsc_desc *desc) { struct device *dev = desc->dev; size_t num = desc->num; gdsc_pm_subdomain_remove(desc, num); of_genpd_del_provider(dev->of_node); } That leaves dangling entries on the global gpd_list. After a provider unbind/rebind cycle (deferred-probe replay during early boot, real module unload of a clk driver that owns GDSCs, or an OF-overlay tear- down) the next gdsc_init() will end up trying to re-register a name that is still in the list and pm_genpd_init() returns -EEXIST. While we are here, flip the order so the consumer-facing OF provider entry is the first thing removed -- otherwise a fresh of_genpd_get_from_provider() call racing with the teardown could attach to a domain that is mid-removal. Iterate the scs[] array and pm_genpd_remove() each registered domain after the subdomain links are torn down. The regulators stay devm- managed (devm_regulator_get_optional() in gdsc_register()), so the release happens automatically when the underlying device is unbound; just the genpd accounting needs to be undone explicitly.",
    "evidence": "osv:CVE-2026-93145",
    "products": [
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        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "evidence": "/affected/1/ranges"
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            "value": "5.15.221",
            "evidence": "/affected/1/ranges"
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            "value": "6.1.188",
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          },
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            "value": "6.6.157",
            "evidence": "/affected/1/ranges"
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          {
            "value": "6.12.110",
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            "value": "6.18.52",
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            "evidence": "/affected/1/ranges"
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        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-93145",
      "aliases": [
        "CVE-2026-93145"
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      ],
      "modified": "2026-10-28T02:30:40.156791867Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0f4733f5fc6b6b62750619f30c18730922a1dbdb",
        "https://git.kernel.org/stable/c/40bd77fa2857ccfa77b885b77d44cea406f24a4c",
        "https://git.kernel.org/stable/c/418d2f0a32b2a9ceb656a88aa9139408a9b7b517",
        "https://git.kernel.org/stable/c/6333cbf7e86df9797b342ce64ae7d32ba46d8d10",
        "https://git.kernel.org/stable/c/6b9228a43963bcd4db92deb467375345132c29b3",
        "https://git.kernel.org/stable/c/86b23609d5e17a770d03037e53c6a443e742a6e6",
        "https://git.kernel.org/stable/c/cfe16d993c578f6b17e0171a8dfd68f6fdfcfb24",
        "https://git.kernel.org/stable/c/f60f495858379dc70e87c6898d761a9db98739ff",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93145.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-93145",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93145.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-93145",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 507778,
  "published_at": "2026-09-17T16:11:43.421+00:00"
}