cbcvebase.
CVE-2025-22009
published 2025-04-08

CVE-2025-22009: In the Linux kernel, the following vulnerability has been resolved: regulator: dummy: force synchronous probing Sometimes I get a NULL pointer dereference at…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.18%
8.1th percentile
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: anatop_regulator_probe() devm_regulator_register() regulator_register() regulator_resolve_supply() kobject_get() By placing some extra BUG_ON() statements I could verify that this is raised because probing of the 'dummy' regulator driver is not completed ('dummy_regulator_rdev' is still NULL). In the JTAG debugger I can see that dummy_regulator_probe() and anatop_regulator_probe() 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.

Affected

15 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.12.21-1 (forky)linux 6.12.21-1 (forky)
linuxlinux
linuxlinux>= 259b93b21a9ffe5117af4dfb5505437e463c6a5a < e26f24ca4fb940b15e092796c5993142a2558bd9e26f24ca4fb940b15e092796c5993142a2558bd9
linuxlinux>= 259b93b21a9ffe5117af4dfb5505437e463c6a5a < d3b83a1442a09b145006eb4294b1a963c5345c9cd3b83a1442a09b145006eb4294b1a963c5345c9c
linuxlinux>= 259b93b21a9ffe5117af4dfb5505437e463c6a5a < 5ade367b56c3947c990598df92395ce737bee8725ade367b56c3947c990598df92395ce737bee872
linuxlinux>= 259b93b21a9ffe5117af4dfb5505437e463c6a5a < 8619909b38eeebd3e60910158d7d68441fc954e98619909b38eeebd3e60910158d7d68441fc954e9
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.12.21-16.12.21-1
linuxlinux_kernel>= 0 < 6.12.21-16.12.21-1
linuxlinux_kernel>= 0 < 6.8.0-84.846.8.0-84.84
linuxlinux_kernel>= 6.13 < 6.13.96.13.9
linuxlinux_kernel>= 6.4 < 6.6.856.6.85
linuxlinux_kernel>= 6.7 < 6.12.216.12.21
msrcazl3_kernel_6.6.82.1-1_on_azure_linux_3.0
msrcazl3_kernel_6.6.85.1-2_on_azure_linux_3.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.9MEDIUM
vendor_ubuntu5.9MEDIUM
vendor_debian5.5LOW
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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