FKIE_CVE-2022-49308

Vulnerability from fkie_nvd - Published: 2025-02-26 07:01 - Updated: 2025-10-21 12:19
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/033ec4e7e59ae5e1ef1e8c10bc6552926044ed1cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35ff1ac55d301efb3f467cf5426faaeb3452994bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/368e68ad6da4317fc4170e8d92b51c13d1bfe7a7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5dcc2afe716d69f5112ce035cb14f007461ff189Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6e721f3ad0535b24f19a62420f4da95212cf069cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/abf3b222614f49f98e606fccdd269161c0d70204Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cb81ea998c461868d1168411a867d8ffee12f23fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d472c78cc82999d07bd09193a6718016ce9cd386Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

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  "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\u0027s backtrace.\n\nBacktrace:\n[\u003cc067865c\u003e] (state_show) from [\u003cc05222e8\u003e] (dev_attr_show)\n[\u003cc05222c0\u003e] (dev_attr_show) from [\u003cc02c66e0\u003e] (sysfs_kf_seq_show)\n[\u003cc02c6648\u003e] (sysfs_kf_seq_show) from [\u003cc02c496c\u003e] (kernfs_seq_show)\n[\u003cc02c4938\u003e] (kernfs_seq_show) from [\u003cc025e2a0\u003e] (seq_read)\n[\u003cc025e11c\u003e] (seq_read) from [\u003cc02c50a0\u003e] (kernfs_fop_read)\n[\u003cc02c5064\u003e] (kernfs_fop_read) from [\u003cc0231cac\u003e] (__vfs_read)\n[\u003cc0231c5c\u003e] (__vfs_read) from [\u003cc0231ee0\u003e] (vfs_read)\n[\u003cc0231e34\u003e] (vfs_read) from [\u003cc0232464\u003e] (ksys_read)\n[\u003cc02323f0\u003e] (ksys_read) from [\u003cc02324fc\u003e] (sys_read)\n[\u003cc02324e4\u003e] (sys_read) from [\u003cc00091d0\u003e] (__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 despu\u00e9s 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 modific\u00f3 el registro del controlador despu\u00e9s 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)"
    }
  ],
  "id": "CVE-2022-49308",
  "lastModified": "2025-10-21T12:19:21.033",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2025-02-26T07:01:07.607",
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  "vulnStatus": "Analyzed",
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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