pmdomain: arm: scmi: Fix genpd leak on provider registration failure

{
  "id": "1d9e40a2d948b333ddeb4b5b0e27d70f9ca73b1bf647a984f7a2ed3df551f531",
  "url": "https://osv.dev/vulnerability/CVE-2025-68204",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "pmdomain: arm: scmi: Fix genpd leak on provider registration failure",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: pmdomain: arm: scmi: Fix genpd leak on provider registration failure If of_genpd_add_provider_onecell() fails during probe, the previously created generic power domains are not removed, leading to a memory leak and potential kernel crash later in genpd_debug_add(). Add proper error handling to unwind the initialized domains before returning from probe to ensure all resources are correctly released on failure. Example crash trace observed without this fix: | Unable to handle kernel paging request at virtual address fffffffffffffc70 | CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.18.0-rc1 #405 PREEMPT | Hardware name: ARM LTD ARM Juno Development Platform/ARM Juno Development Platform | pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) | pc : genpd_debug_add+0x2c/0x160 | lr : genpd_debug_init+0x74/0x98 | Call trace: | genpd_debug_add+0x2c/0x160 (P) | genpd_debug_init+0x74/0x98 | do_one_initcall+0xd0/0x2d8 | do_initcall_level+0xa0/0x140 | do_initcalls+0x60/0xa8 | do_basic_setup+0x28/0x40 | kernel_init_freeable+0xe8/0x170 | kernel_init+0x2c/0x140 | ret_from_fork+0x10/0x20",
    "evidence": "osv:CVE-2025-68204",
    "products": [
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        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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        "affected_versions": []
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    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-68204",
      "aliases": [
        "CVE-2025-68204"
      ],
      "affected": [
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              "type": "GIT",
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                  "fixed": "c6e11d320fd6cbaef6d589f2fcb45aa25a6b960a"
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                {
                  "fixed": "582f48d22eb5676fe7be3589b986ddd29f7bf4d1"
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                  "fixed": "ad120c08b89a81d41d091490bbe150343473b659"
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                  "fixed": "921b090841ae7a08b19ab14495bdf8636dc31e21"
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        {
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              "type": "ECOSYSTEM",
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
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      ],
      "modified": "2026-10-28T02:30:29.728245600Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/18249a167ffd91b4b4fbd92afd4ddcbf3af81f35",
        "https://git.kernel.org/stable/c/582f48d22eb5676fe7be3589b986ddd29f7bf4d1",
        "https://git.kernel.org/stable/c/7458f72cc28f9eb0de811effcb5376d0ec19094a",
        "https://git.kernel.org/stable/c/7f569197f7ad09319af960bd7e43109de5c67c04",
        "https://git.kernel.org/stable/c/921b090841ae7a08b19ab14495bdf8636dc31e21",
        "https://git.kernel.org/stable/c/983e91da82ec3e331600108f9be3ea61236f5c75",
        "https://git.kernel.org/stable/c/ad120c08b89a81d41d091490bbe150343473b659",
        "https://git.kernel.org/stable/c/c6e11d320fd6cbaef6d589f2fcb45aa25a6b960a",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68204.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-68204",
        "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/2025/68xxx/CVE-2025-68204.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-68204",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 496453,
  "published_at": "2025-12-16T13:48:31.85+00:00"
}