CVE-2022-49308
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: extcon: Modify extcon device to be created after driver data is set Currently, someone can invoke the sysfs such as state_show() intermittently before dev_set_drvdata() is done. And it can be a cause of kernel Oops because of edev is Null at that time. So modified the driver registration to after setting drviver data. - Oops's backtrace. Backtrace: [<c067865c>] (state_show) from [<c05222e8>] (dev_attr_show) [<c05222c0>] (dev_attr_show) from [<c02c66e0>] (sysfs_kf_seq_show) [<c02c6648>] (sysfs_kf_seq_show) from [<c02c496c>] (kernfs_seq_show) [<c02c4938>] (kernfs_seq_show) from [<c025e2a0>] (seq_read) [<c025e11c>] (seq_read) from [<c02c50a0>] (kernfs_fop_read) [<c02c5064>] (kernfs_fop_read) from [<c0231cac>] (__vfs_read) [<c0231c5c>] (__vfs_read) from [<c0231ee0>] (vfs_read) [<c0231e34>] (vfs_read) from [<c0232464>] (ksys_read) [<c02323f0>] (ksys_read) from [<c02324fc>] (sys_read) [<c02324e4>] (sys_read) from [<c00091d0>] (__sys_trace_return)
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-02-26 07:01:07.607000
Last modified
2026-11-05 20:17:03.440000
View original CVE JSON
{
"id": "CVE-2022-49308",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-02-26T07:01:07.607",
"lastModified": "2026-11-05T20:17:03.440",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nextcon: Modify extcon device to be created after driver data is set\n\nCurrently, someone can invoke the sysfs such as state_show()\nintermittently before dev_set_drvdata() is done.\nAnd it can be a cause of kernel Oops because of edev is Null at that time.\nSo modified the driver registration to after setting drviver data.\n\n- Oops's backtrace.\n\nBacktrace:\n[<c067865c>] (state_show) from [<c05222e8>] (dev_attr_show)\n[<c05222c0>] (dev_attr_show) from [<c02c66e0>] (sysfs_kf_seq_show)\n[<c02c6648>] (sysfs_kf_seq_show) from [<c02c496c>] (kernfs_seq_show)\n[<c02c4938>] (kernfs_seq_show) from [<c025e2a0>] (seq_read)\n[<c025e11c>] (seq_read) from [<c02c50a0>] (kernfs_fop_read)\n[<c02c5064>] (kernfs_fop_read) from [<c0231cac>] (__vfs_read)\n[<c0231c5c>] (__vfs_read) from [<c0231ee0>] (vfs_read)\n[<c0231e34>] (vfs_read) from [<c0232464>] (ksys_read)\n[<c02323f0>] (ksys_read) from [<c02324fc>] (sys_read)\n[<c02324e4>] (sys_read) from [<c00091d0>] (__sys_trace_return)"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: extcon: Modificar el dispositivo extcon para que se cree después de que se configuren los datos del controlador. Actualmente, alguien puede invocar el sysfs como state_show() de forma intermitente antes de que se realice dev_set_drvdata(). Y puede ser una causa de errores del kernel debido a que edev es Null en ese momento. Por lo tanto, se modificó el registro del controlador después de configurar los datos del controlador. - Ups, el backtrace. Rastreo inverso: [] (mostrar estado) desde [] (mostrar atributo de desarrollo) [] (mostrar atributo de desarrollo) desde [] (mostrar secuencia de sysfs_kf_seq) [] (mostrar secuencia de sysfs_kf_seq) desde [] (mostrar secuencia de kernfs) [] (mostrar secuencia de kernfs) desde [] (leer secuencia) [] (leer secuencia) desde [] (leer secuencia de kernfs_fop) [] (kernfs_fop_read) desde [] (__vfs_read) [] (__vfs_read) desde [] (vfs_read) [] (vfs_read) desde [] (ksys_read) [] (ksys_read) desde [] (sys_read) [] (sys_read) desde [] (__sys_trace_return)"
}
],
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"source": "[email protected]",
"type": "Primary",
"cvssData": {
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"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
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"impactScore": 3.6
}
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"ssvcV203": [
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"ssvcData": {
"timestamp": "2026-11-05T19:45:07.347141Z",
"id": "CVE-2022-49308",
"options": [
{
"exploitation": "none"
},
{
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{
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}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
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"weaknesses": [
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"source": "[email protected]",
"type": "Primary",
"description": [
{
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"value": "NVD-CWE-noinfo"
}
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