fkie_cve-2025-21856
Vulnerability from fkie_nvd
Published
2025-03-12 10:15
Modified
2025-10-01 20:18
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/ism: add release function for struct device According to device_release() in /drivers/base/core.c, a device without a release function is a broken device and must be fixed. The current code directly frees the device after calling device_add() without waiting for other kernel parts to release their references. Thus, a reference could still be held to a struct device, e.g., by sysfs, leading to potential use-after-free issues if a proper release function is not set.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0505ff2936f166405d81d0d454a81d9c14124344Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/915e34d5ad35a6a9e56113f852ade4a730fb88f0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/940d15254d2216b585558bcf36312da50074e711Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e26e8ac27351f457091459a0a355bacd06d5bb2bPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14


To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/ism: add release function for struct device\n\nAccording to device_release() in /drivers/base/core.c,\na device without a release function is a broken device\nand must be fixed.\n\nThe current code directly frees the device after calling device_add()\nwithout waiting for other kernel parts to release their references.\nThus, a reference could still be held to a struct device,\ne.g., by sysfs, leading to potential use-after-free\nissues if a proper release function is not set."
    },
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: s390/ism: a\u00f1adir funci\u00f3n de liberaci\u00f3n para struct device. Seg\u00fan device_release() en /drivers/base/core.c, un dispositivo sin funci\u00f3n de liberaci\u00f3n es un dispositivo da\u00f1ado y debe repararse. El c\u00f3digo actual libera el dispositivo directamente tras llamar a device_add() sin esperar a que otras partes del kernel liberen sus referencias. Por lo tanto, una referencia a un dispositivo de estructura podr\u00eda seguir manteni\u00e9ndose, por ejemplo, mediante sysfs, lo que podr\u00eda provocar problemas de uso despu\u00e9s de la liberaci\u00f3n si no se configura una funci\u00f3n de liberaci\u00f3n adecuada."
    }
  ],
  "id": "CVE-2025-21856",
  "lastModified": "2025-10-01T20:18:29.757",
  "metrics": {
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          "attackComplexity": "LOW",
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          "confidentialityImpact": "HIGH",
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          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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  "vulnStatus": "Modified",
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          "value": "CWE-416"
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}


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