CVE-2025-22009
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-22009
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-22009.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-22009
- Downstream
- Related
- Published
- 2025-04-08T08:17:59Z
- Modified
- 2025-10-14T16:08:55.884092Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- regulator: dummy: force synchronous probing
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
regulator: dummy: force synchronous probing
Sometimes I get a NULL pointer dereference at boot time in kobject_get() with the following call stack:
anatopregulatorprobe() devmregulatorregister() regulatorregister() regulatorresolvesupply() kobjectget()
By placing some extra BUGON() statements I could verify that this is raised because probing of the 'dummy' regulator driver is not completed ('dummyregulator_rdev' is still NULL).
In the JTAG debugger I can see that dummyregulatorprobe() and anatopregulatorprobe() can be run by different kernel threads (kworker/u4:*). I haven't further investigated whether this can be changed or if there are other possibilities to force synchronization between these two probe routines. On the other hand I don't expect much boot time penalty by probing the 'dummy' regulator synchronously.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/5ade367b56c3947c990598df92395ce737bee872
- https://git.kernel.org/stable/c/8619909b38eeebd3e60910158d7d68441fc954e9
- https://git.kernel.org/stable/c/d3b83a1442a09b145006eb4294b1a963c5345c9c
- https://git.kernel.org/stable/c/e26f24ca4fb940b15e092796c5993142a2558bd9
Affected packages
Git / 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
-
Introduced259b93b21a9ffe5117af4dfb5505437e463c6a5aFixede26f24ca4fb940b15e092796c5993142a2558bd9
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced259b93b21a9ffe5117af4dfb5505437e463c6a5aFixedd3b83a1442a09b145006eb4294b1a963c5345c9c
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced259b93b21a9ffe5117af4dfb5505437e463c6a5aFixed5ade367b56c3947c990598df92395ce737bee872
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced259b93b21a9ffe5117af4dfb5505437e463c6a5aFixed8619909b38eeebd3e60910158d7d68441fc954e9