FKIE_CVE-2023-53561

Vulnerability from fkie_nvd - Published: 2025-10-04 16:15 - Updated: 2025-10-06 14:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: wwan: iosm: fix NULL pointer dereference when removing device In suspend and resume cycle, the removal and rescan of device ends up in NULL pointer dereference. During driver initialization, if the ipc_imem_wwan_channel_init() fails to get the valid device capabilities it returns an error and further no resource (wwan struct) will be allocated. Now in this situation if driver removal procedure is initiated it would result in NULL pointer exception since unallocated wwan struct is dereferenced inside ipc_wwan_deinit(). ipc_imem_run_state_worker() to handle the called functions return value and to release the resource in failure case. It also reports the link down event in failure cases. The user space application can handle this event to do a device reset for restoring the device communication.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60829145f1e2650b31ebe6a0ec70a9725b38fa2c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/862c6e3e26735247d8a4df41fa2421909c3f4d63
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ee44bacf462db3ec6e4f0dcfa7931e768670d77c
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wwan: iosm: fix NULL pointer dereference when removing device\n\nIn suspend and resume cycle, the removal and rescan of device ends\nup in NULL pointer dereference.\n\nDuring driver initialization, if the ipc_imem_wwan_channel_init()\nfails to get the valid device capabilities it returns an error and\nfurther no resource (wwan struct) will be allocated. Now in this\nsituation if driver removal procedure is initiated it would result\nin NULL pointer exception since unallocated wwan struct is dereferenced\ninside ipc_wwan_deinit().\n\nipc_imem_run_state_worker() to handle the called functions return value\nand to release the resource in failure case. It also reports the link\ndown event in failure cases. The user space application can handle this\nevent to do a device reset for restoring the device communication."
    }
  ],
  "id": "CVE-2023-53561",
  "lastModified": "2025-10-06T14:56:21.733",
  "metrics": {},
  "published": "2025-10-04T16:15:51.530",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/60829145f1e2650b31ebe6a0ec70a9725b38fa2c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/862c6e3e26735247d8a4df41fa2421909c3f4d63"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ee44bacf462db3ec6e4f0dcfa7931e768670d77c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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