fkie_cve-2025-38615
Vulnerability from fkie_nvd
Published
2025-08-19 17:15
Modified
2025-08-20 14:40
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: cancle set bad inode after removing name fails The reproducer uses a file0 on a ntfs3 file system with a corrupted i_link. When renaming, the file0's inode is marked as a bad inode because the file name cannot be deleted. The underlying bug is that make_bad_inode() is called on a live inode. In some cases it's "icache lookup finds a normal inode, d_splice_alias() is called to attach it to dentry, while another thread decides to call make_bad_inode() on it - that would evict it from icache, but we'd already found it there earlier". In some it's outright "we have an inode attached to dentry - that's how we got it in the first place; let's call make_bad_inode() on it just for shits and giggles".
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/358d4f821c03add421a4c49290538a705852ccf1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ed2cc6a6e93fbeb8c0cafce1e7fb1f64a331dcc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a285395020780adac1ffbc844069c3d700bf007a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b35a50d639ca5259466ef5fea85529bb4fb17d5b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d99208b91933fd2a58ed9ed321af07dacd06ddc3
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: cancle set bad inode after removing name fails\n\nThe reproducer uses a file0 on a ntfs3 file system with a corrupted i_link.\nWhen renaming, the file0\u0027s inode is marked as a bad inode because the file\nname cannot be deleted.\n\nThe underlying bug is that make_bad_inode() is called on a live inode.\nIn some cases it\u0027s \"icache lookup finds a normal inode, d_splice_alias()\nis called to attach it to dentry, while another thread decides to call\nmake_bad_inode() on it - that would evict it from icache, but we\u0027d already\nfound it there earlier\".\nIn some it\u0027s outright \"we have an inode attached to dentry - that\u0027s how we\ngot it in the first place; let\u0027s call make_bad_inode() on it just for shits\nand giggles\"."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fs/ntfs3: falla la cancelaci\u00f3n de un inodo err\u00f3neo tras eliminar el nombre. El reproductor usa un archivo \"file0\" en un sistema de archivos ntfs3 con un i_link da\u00f1ado. Al renombrar, el inodo de archivo \"file0\" se marca como err\u00f3neo porque no se puede eliminar el nombre del archivo. El error subyacente radica en que se llama a make_bad_inode() en un inodo activo. En algunos casos, la b\u00fasqueda de icache encuentra un inodo normal, se llama a d_splice_alias() para asociarlo a dentry, mientras que otro hilo decide llamar a make_bad_inode() en \u00e9l; eso lo expulsar\u00eda de icache, pero ya lo hab\u00edamos encontrado all\u00ed anteriormente. En otros casos, es simplemente: \"Tenemos un inodo asociado a dentry; as\u00ed es como lo obtuvimos; llamemos a make_bad_inode() en \u00e9l, solo por diversi\u00f3n\"."
    }
  ],
  "id": "CVE-2025-38615",
  "lastModified": "2025-08-20T14:40:17.713",
  "metrics": {},
  "published": "2025-08-19T17:15:40.177",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/358d4f821c03add421a4c49290538a705852ccf1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3ed2cc6a6e93fbeb8c0cafce1e7fb1f64a331dcc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a285395020780adac1ffbc844069c3d700bf007a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b35a50d639ca5259466ef5fea85529bb4fb17d5b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d99208b91933fd2a58ed9ed321af07dacd06ddc3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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