CVE-2025-22009

Source
https://nvd.nist.gov/vuln/detail/CVE-2025-22009
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22009.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-22009
Downstream
Related
Published
2025-04-08T09:15:24Z
Modified
2025-04-10T13:10:51Z
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
[none]
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

Affected packages

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.12.21-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}