CVE-2025-39771
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: regulator: pca9450: Use devm_register_sys_off_handler With module test, there is error dump: ------------[ cut here ]------------ notifier callback pca9450_i2c_restart_handler already registered WARNING: kernel/notifier.c:23 at notifier_chain_register+0x5c/0x88, CPU#0: kworker/u16:3/50 Call trace: notifier_chain_register+0x5c/0x88 (P) atomic_notifier_chain_register+0x30/0x58 register_restart_handler+0x1c/0x28 pca9450_i2c_probe+0x418/0x538 i2c_device_probe+0x220/0x3d0 really_probe+0x114/0x410 __driver_probe_device+0xa0/0x150 driver_probe_device+0x40/0x114 __device_attach_driver+0xd4/0x12c So use devm_register_sys_off_handler to let kernel handle the resource free to avoid kernel dump.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-11 17:15:42.683000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
{
"id": "CVE-2025-39771",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-09-11T17:15:42.683",
"lastModified": "2026-10-19T21:10:00.160",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nregulator: pca9450: Use devm_register_sys_off_handler\n\nWith module test, there is error dump:\n------------[ cut here ]------------\n notifier callback pca9450_i2c_restart_handler already registered\n WARNING: kernel/notifier.c:23 at notifier_chain_register+0x5c/0x88,\n CPU#0: kworker/u16:3/50\n Call trace:\n notifier_chain_register+0x5c/0x88 (P)\n atomic_notifier_chain_register+0x30/0x58\n register_restart_handler+0x1c/0x28\n pca9450_i2c_probe+0x418/0x538\n i2c_device_probe+0x220/0x3d0\n really_probe+0x114/0x410\n __driver_probe_device+0xa0/0x150\n driver_probe_device+0x40/0x114\n __device_attach_driver+0xd4/0x12c\n\nSo use devm_register_sys_off_handler to let kernel handle the resource\nfree to avoid kernel dump."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nregulator: pca9450: Usar devm_register_sys_off_handler\n\nCon la prueba del módulo, hay un volcado de error:\n------------[ cortar aquí ]------------\n callback del notificador pca9450_i2c_restart_handler ya registrado\n ADVERTENCIA: kernel/notifier.c:23 en notifier_chain_register+0x5c/0x88,\n CPU#0: kworker/u16:3/50\n Traza de la llamada:\n notifier_chain_register+0x5c/0x88 (P)\n atomic_notifier_chain_register+0x30/0x58\n register_restart_handler+0x1c/0x28\n pca9450_i2c_probe+0x418/0x538\n i2c_device_probe+0x220/0x3d0\n really_probe+0x114/0x410\n __driver_probe_device+0xa0/0x150\n driver_probe_device+0x40/0x114\n __device_attach_driver+0xd4/0x12c\n\nAsí que use devm_register_sys_off_handler para permitir que el kernel maneje la liberación de recursos para evitar el volcado del kernel."
}
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"affected": [
{
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"affectedData": [
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"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"versionType": "git",
"status": "affected"
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"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
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{
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{
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}
]
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}
],
"metrics": {
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{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"configurations": [
{
"nodes": [
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"cpeMatch": [
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"references": [
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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