fkie_cve-2025-38306
Vulnerability from fkie_nvd
Published
2025-07-10 08:15
Modified
2025-07-10 13:17
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: fs/fhandle.c: fix a race in call of has_locked_children() may_decode_fh() is calling has_locked_children() while holding no locks. That's an oopsable race... The rest of the callers are safe since they are holding namespace_sem and are guaranteed a positive refcount on the mount in question. Rename the current has_locked_children() to __has_locked_children(), make it static and switch the fs/namespace.c users to it. Make has_locked_children() a wrapper for __has_locked_children(), calling the latter under read_seqlock_excl(&mount_lock).
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1f282cdc1d219c4a557f7009e81bc792820d9d9a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/287c7d34eedd37af1272dfb3b6e8656f4f026424
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\nfs/fhandle.c: fix a race in call of has_locked_children()\n\nmay_decode_fh() is calling has_locked_children() while holding no locks.\nThat\u0027s an oopsable race...\n\nThe rest of the callers are safe since they are holding namespace_sem and\nare guaranteed a positive refcount on the mount in question.\n\nRename the current has_locked_children() to __has_locked_children(), make\nit static and switch the fs/namespace.c users to it.\n\nMake has_locked_children() a wrapper for __has_locked_children(), calling\nthe latter under read_seqlock_excl(\u0026mount_lock)."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fs/fhandle.c: se corrige una ejecuci\u00f3n en la llamada a has_locked_children(). may_decode_fh() llama a has_locked_children() sin bloqueos. Esta es una ejecuci\u00f3n que puede fallar. El resto de los invocadores est\u00e1n seguros, ya que mantienen namespace_sem y se les garantiza un recuento de referencias positivo en el montaje en cuesti\u00f3n. Cambie el nombre de has_locked_children() actual a __has_locked_children(), convi\u00e9rtalo en est\u00e1tico y cambie los usuarios de fs/namespace.c a \u00e9l. Convierta has_locked_children() en un contenedor para __has_locked_children(), invoc\u00e1ndolo bajo read_seqlock_excl(\u0026amp;mount_lock)."
    }
  ],
  "id": "CVE-2025-38306",
  "lastModified": "2025-07-10T13:17:30.017",
  "metrics": {},
  "published": "2025-07-10T08:15:29.440",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1f282cdc1d219c4a557f7009e81bc792820d9d9a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/287c7d34eedd37af1272dfb3b6e8656f4f026424"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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