{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-22009",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-22009"
  ],
  "published": "2025-04-08T08:16:52Z",
  "summary": "regulator: dummy: force synchronous probing",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nregulator: dummy: force synchronous probing\n\nSometimes I get a NULL pointer dereference at boot time in kobject_get()\nwith the following call stack:\n\nanatop_regulator_probe()\n devm_regulator_register()\n  regulator_register()\n   regulator_resolve_supply()\n    kobject_get()\n\nBy placing some extra BUG_ON() statements I could verify that this is\nraised because probing of the 'dummy' regulator driver is not completed\n('dummy_regulator_rdev' is still NULL).\n\nIn the JTAG debugger I can see that dummy_regulator_probe() and\nanatop_regulator_probe() can be run by different kernel threads\n(kworker/u4:*).  I haven't further investigated whether this can be\nchanged or if there are other possibilities to force synchronization\nbetween these two probe routines.  On the other hand I don't expect much\nboot time penalty by probing the 'dummy' regulator synchronously.",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-22009"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e26f24ca4fb940b15e092796c5993142a2558bd9"
    },
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      "url": "https://git.kernel.org/stable/c/d3b83a1442a09b145006eb4294b1a963c5345c9c"
    },
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      "url": "https://git.kernel.org/stable/c/5ade367b56c3947c990598df92395ce737bee872"
    },
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      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8619909b38eeebd3e60910158d7d68441fc954e9"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
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}