fkie_cve-2023-53480
Vulnerability from fkie_nvd
Published
2025-10-01 12:15
Modified
2025-10-02 19:12
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: kobject: Add sanity check for kset->kobj.ktype in kset_register() When I register a kset in the following way: static struct kset my_kset; kobject_set_name(&my_kset.kobj, "my_kset"); ret = kset_register(&my_kset); A null pointer dereference exception is occurred: [ 4453.568337] Unable to handle kernel NULL pointer dereference at \ virtual address 0000000000000028 ... ... [ 4453.810361] Call trace: [ 4453.813062] kobject_get_ownership+0xc/0x34 [ 4453.817493] kobject_add_internal+0x98/0x274 [ 4453.822005] kset_register+0x5c/0xb4 [ 4453.825820] my_kobj_init+0x44/0x1000 [my_kset] ... ... Because I didn't initialize my_kset.kobj.ktype. According to the description in Documentation/core-api/kobject.rst: - A ktype is the type of object that embeds a kobject. Every structure that embeds a kobject needs a corresponding ktype. So add sanity check to make sure kset->kobj.ktype is not NULL.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/039ec9db2d30032eafa365f5f89b30eca5322b05
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1792eac72e27f676bf9ebde28a5afea627fb85f0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1a772881bc059c596d8ca587cbd2a233edce3d3b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/48aebbe801e78a8932404c122ed0e880ccedc220
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4d0fe8c52bb3029d83e323c961221156ab98680b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5df5829158513134ddcaf2184d9286eda7b0bb18
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/964e025ceefdf75da46b0133d0c2790de451aeec
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f3f6bf22a4f5ba649cf26ae4670de5c7f861bdef
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkobject: Add sanity check for kset-\u003ekobj.ktype in kset_register()\n\nWhen I register a kset in the following way:\n\tstatic struct kset my_kset;\n\tkobject_set_name(\u0026my_kset.kobj, \"my_kset\");\n        ret = kset_register(\u0026my_kset);\n\nA null pointer dereference exception is occurred:\n[ 4453.568337] Unable to handle kernel NULL pointer dereference at \\\nvirtual address 0000000000000028\n... ...\n[ 4453.810361] Call trace:\n[ 4453.813062]  kobject_get_ownership+0xc/0x34\n[ 4453.817493]  kobject_add_internal+0x98/0x274\n[ 4453.822005]  kset_register+0x5c/0xb4\n[ 4453.825820]  my_kobj_init+0x44/0x1000 [my_kset]\n... ...\n\nBecause I didn\u0027t initialize my_kset.kobj.ktype.\n\nAccording to the description in Documentation/core-api/kobject.rst:\n - A ktype is the type of object that embeds a kobject.  Every structure\n   that embeds a kobject needs a corresponding ktype.\n\nSo add sanity check to make sure kset-\u003ekobj.ktype is not NULL."
    }
  ],
  "id": "CVE-2023-53480",
  "lastModified": "2025-10-02T19:12:17.160",
  "metrics": {},
  "published": "2025-10-01T12:15:50.600",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/039ec9db2d30032eafa365f5f89b30eca5322b05"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1792eac72e27f676bf9ebde28a5afea627fb85f0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1a772881bc059c596d8ca587cbd2a233edce3d3b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/48aebbe801e78a8932404c122ed0e880ccedc220"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4d0fe8c52bb3029d83e323c961221156ab98680b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5df5829158513134ddcaf2184d9286eda7b0bb18"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/964e025ceefdf75da46b0133d0c2790de451aeec"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f3f6bf22a4f5ba649cf26ae4670de5c7f861bdef"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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