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.
Metrics
Affected Vendors & Products
References
History
Wed, 01 Oct 2025 17:15:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Thu, 10 Apr 2025 13:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Linux
Linux linux Kernel |
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| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.14:rc7:*:*:*:*:*:* |
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| Vendors & Products |
Linux
Linux linux Kernel |
Wed, 09 Apr 2025 19:30:00 +0000
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| Weaknesses | CWE-476 |
Tue, 08 Apr 2025 14:15:00 +0000
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| References |
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| Metrics |
threat_severity
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cvssV3_1
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Tue, 08 Apr 2025 08:30:00 +0000
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| Description | 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. | |
| Title | regulator: dummy: force synchronous probing | |
| References |
|
Status: PUBLISHED
Assigner: Linux
Published: 2025-04-08T08:17:59.840Z
Updated: 2025-10-01T17:09:02.444Z
Reserved: 2024-12-29T08:45:45.803Z
Link: CVE-2025-22009
Updated: 2025-10-01T14:39:47.466Z
Status : Modified
Published: 2025-04-08T09:15:24.460
Modified: 2025-10-01T17:15:41.990
Link: CVE-2025-22009