fkie_cve-2025-23147
Vulnerability from fkie_nvd
Published
2025-05-01 13:15
Modified
2025-11-05 18:04
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: i3c: Add NULL pointer check in i3c_master_queue_ibi() The I3C master driver may receive an IBI from a target device that has not been probed yet. In such cases, the master calls `i3c_master_queue_ibi()` to queue an IBI work task, leading to "Unable to handle kernel read from unreadable memory" and resulting in a kernel panic. Typical IBI handling flow: 1. The I3C master scans target devices and probes their respective drivers. 2. The target device driver calls `i3c_device_request_ibi()` to enable IBI and assigns `dev->ibi = ibi`. 3. The I3C master receives an IBI from the target device and calls `i3c_master_queue_ibi()` to queue the target device driver’s IBI handler task. However, since target device events are asynchronous to the I3C probe sequence, step 3 may occur before step 2, causing `dev->ibi` to be `NULL`, leading to a kernel panic. Add a NULL pointer check in `i3c_master_queue_ibi()` to prevent accessing an uninitialized `dev->ibi`, ensuring stability.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/09359e7c8751961937cb5fc50220969b0a4e1058Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1b54faa5f47fa7c642179744aeff03f0810dc62ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ba402610843d7d15c7f3966a461deeeaff7fba4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6871a676aa534e8f218279672e0445c725f81026Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bd496a44f041da9ef3afe14d1d6193d460424e91Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d83b0c03ef8fbea2f03029a1cc1f5041f0e1d47fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e6bba328578feb58c614c11868c259b40484c5faPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fe4a4fc179b7898055555a11685915473588392ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ff9d61db59bb27d16d3f872bff2620d50856b80cPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00030.htmlMailing List
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlMailing List
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 *
linux linux_kernel *
debian debian_linux 11.0


To clipboard 

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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: Add NULL pointer check in i3c_master_queue_ibi()\n\nThe I3C master driver may receive an IBI from a target device that has not\nbeen probed yet. In such cases, the master calls `i3c_master_queue_ibi()`\nto queue an IBI work task, leading to \"Unable to handle kernel read from\nunreadable memory\" and resulting in a kernel panic.\n\nTypical IBI handling flow:\n1. The I3C master scans target devices and probes their respective drivers.\n2. The target device driver calls `i3c_device_request_ibi()` to enable IBI\n   and assigns `dev-\u003eibi = ibi`.\n3. The I3C master receives an IBI from the target device and calls\n   `i3c_master_queue_ibi()` to queue the target device driver\u2019s IBI\n   handler task.\n\nHowever, since target device events are asynchronous to the I3C probe\nsequence, step 3 may occur before step 2, causing `dev-\u003eibi` to be `NULL`,\nleading to a kernel panic.\n\nAdd a NULL pointer check in `i3c_master_queue_ibi()` to prevent accessing\nan uninitialized `dev-\u003eibi`, ensuring stability."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: i3c: A\u00f1adir comprobaci\u00f3n de puntero nulo en i3c_master_queue_ibi(). El controlador maestro I3C puede recibir una IBI de un dispositivo de destino que a\u00fan no se ha sondeado. En tales casos, el maestro llama a `i3c_master_queue_ibi()` para poner en cola una tarea de trabajo IBI, lo que genera el error \"No se puede manejar la lectura del kernel desde memoria ilegible\" y provoca un p\u00e1nico del kernel. Flujo t\u00edpico de manejo de IBI: 1. El maestro I3C escanea los dispositivos de destino y sondea sus respectivos controladores. 2. El controlador del dispositivo de destino llama a `i3c_device_request_ibi()` para habilitar IBI y asigna `dev-\u0026gt;ibi = ibi`. 3. El maestro I3C recibe una IBI del dispositivo de destino y llama a `i3c_master_queue_ibi()` para poner en cola la tarea de manejo de IBI del controlador del dispositivo de destino. Sin embargo, dado que los eventos del dispositivo de destino son as\u00edncronos a la secuencia de sondeo I3C, el paso 3 puede ocurrir antes del paso 2, lo que provoca que `dev-\u0026gt;ibi` sea `NULL` y provoque un p\u00e1nico del kernel. Agregue una comprobaci\u00f3n de puntero NULL en `i3c_master_queue_ibi()` para evitar el acceso a un `dev-\u0026gt;ibi` sin inicializar, garantizando as\u00ed la estabilidad."
    }
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  "id": "CVE-2025-23147",
  "lastModified": "2025-11-05T18:04:44.053",
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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",
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  "published": "2025-05-01T13:15:50.563",
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  "vulnStatus": "Analyzed",
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          "value": "CWE-476"
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}


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