{"id":"CVE-2025-22009","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.","modified":"2026-04-16T04:36:06.995966560Z","published":"2025-04-08T08:17:59.840Z","related":["SUSE-SU-2025:01614-1","SUSE-SU-2025:01707-1","SUSE-SU-2025:01919-1","SUSE-SU-2025:01951-1","SUSE-SU-2025:01964-1","SUSE-SU-2025:01967-1","SUSE-SU-2025:20192-1","SUSE-SU-2025:20206-1","SUSE-SU-2025:20270-1","SUSE-SU-2025:20283-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22009.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/5ade367b56c3947c990598df92395ce737bee872"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8619909b38eeebd3e60910158d7d68441fc954e9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d3b83a1442a09b145006eb4294b1a963c5345c9c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e26f24ca4fb940b15e092796c5993142a2558bd9"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22009.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-22009"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"259b93b21a9ffe5117af4dfb5505437e463c6a5a"},{"fixed":"e26f24ca4fb940b15e092796c5993142a2558bd9"},{"fixed":"d3b83a1442a09b145006eb4294b1a963c5345c9c"},{"fixed":"5ade367b56c3947c990598df92395ce737bee872"},{"fixed":"8619909b38eeebd3e60910158d7d68441fc954e9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22009.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}