fkie_cve-2025-38460
Vulnerability from fkie_nvd
Published
2025-07-25 16:15
Modified
2025-07-29 14:14
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: atm: clip: Fix potential null-ptr-deref in to_atmarpd(). atmarpd is protected by RTNL since commit f3a0592b37b8 ("[ATM]: clip causes unregister hang"). However, it is not enough because to_atmarpd() is called without RTNL, especially clip_neigh_solicit() / neigh_ops->solicit() is unsleepable. Also, there is no RTNL dependency around atmarpd. Let's use a private mutex and RCU to protect access to atmarpd in to_atmarpd().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/06935c50cfa3ac57cce80bba67b6d38ec1406e92
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3251ce3979f41bd228f77a7615f9dd616d06a110
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/36caab990b69ef4eec1d81c52a19f080b7daa059
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/706cc36477139c1616a9b2b96610a8bb520b7119
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/70eac9ba7ce25d99c1d99bbf4ddb058940f631f9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a4c5785feb979cd996a99cfaad8bf353b2e79301
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ee4d9e4ddf3f9c4ee2ec0a3aad6196ee36d30e57
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f58e4270c73e7f086322978d585ea67c8076ce49
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\natm: clip: Fix potential null-ptr-deref in to_atmarpd().\n\natmarpd is protected by RTNL since commit f3a0592b37b8 (\"[ATM]: clip\ncauses unregister hang\").\n\nHowever, it is not enough because to_atmarpd() is called without RTNL,\nespecially clip_neigh_solicit() / neigh_ops-\u003esolicit() is unsleepable.\n\nAlso, there is no RTNL dependency around atmarpd.\n\nLet\u0027s use a private mutex and RCU to protect access to atmarpd in\nto_atmarpd()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: atm: clip: Se corrige un posible error de referencia nulo en to_atmarpd(). atmarpd est\u00e1 protegido por RTNL desde el commit f3a0592b37b8 (\"[ATM]: clip provoca un bloqueo al cancelar el registro\"). Sin embargo, esto no es suficiente, ya que to_atmarpd() se llama sin RTNL, especialmente clip_neigh_solicit() / neigh_ops-\u0026gt;solicit() no se puede suspender. Adem\u00e1s, atmarpd no depende de RTNL. Usemos un mutex privado y una RCU para proteger el acceso a atmarpd en to_atmarpd()."
    }
  ],
  "id": "CVE-2025-38460",
  "lastModified": "2025-07-29T14:14:55.157",
  "metrics": {},
  "published": "2025-07-25T16:15:31.787",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/06935c50cfa3ac57cce80bba67b6d38ec1406e92"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3251ce3979f41bd228f77a7615f9dd616d06a110"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/36caab990b69ef4eec1d81c52a19f080b7daa059"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/706cc36477139c1616a9b2b96610a8bb520b7119"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/70eac9ba7ce25d99c1d99bbf4ddb058940f631f9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a4c5785feb979cd996a99cfaad8bf353b2e79301"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ee4d9e4ddf3f9c4ee2ec0a3aad6196ee36d30e57"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f58e4270c73e7f086322978d585ea67c8076ce49"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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