ghsa-rf84-f276-hxmw
Vulnerability from github
Published
2024-12-27 15:31
Modified
2025-01-07 18:30
Details

In the Linux kernel, the following vulnerability has been resolved:

erofs: fix file-backed mounts over FUSE

syzbot reported a null-ptr-deref in fuse_read_args_fill: fuse_read_folio+0xb0/0x100 fs/fuse/file.c:905 filemap_read_folio+0xc6/0x2a0 mm/filemap.c:2367 do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3825 read_mapping_folio include/linux/pagemap.h:1011 [inline] erofs_bread+0x34d/0x7e0 fs/erofs/data.c:41 erofs_read_superblock fs/erofs/super.c:281 [inline] erofs_fc_fill_super+0x2b9/0x2500 fs/erofs/super.c:625

Unlike most filesystems, some network filesystems and FUSE need unavoidable valid file pointers for their read I/Os [1]. Anyway, those use cases need to be supported too.

[1] https://docs.kernel.org/filesystems/vfs.html

Show details on source website


{
  "affected": [],
  "aliases": [
    "CVE-2024-53235"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-27T14:15:31Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix file-backed mounts over FUSE\n\nsyzbot reported a null-ptr-deref in fuse_read_args_fill:\n fuse_read_folio+0xb0/0x100 fs/fuse/file.c:905\n filemap_read_folio+0xc6/0x2a0 mm/filemap.c:2367\n do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3825\n read_mapping_folio include/linux/pagemap.h:1011 [inline]\n erofs_bread+0x34d/0x7e0 fs/erofs/data.c:41\n erofs_read_superblock fs/erofs/super.c:281 [inline]\n erofs_fc_fill_super+0x2b9/0x2500 fs/erofs/super.c:625\n\nUnlike most filesystems, some network filesystems and FUSE need\nunavoidable valid `file` pointers for their read I/Os [1].\nAnyway, those use cases need to be supported too.\n\n[1] https://docs.kernel.org/filesystems/vfs.html",
  "id": "GHSA-rf84-f276-hxmw",
  "modified": "2025-01-07T18:30:48Z",
  "published": "2024-12-27T15:31:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53235"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a23787ca8756920d65fda39f41353a4be1d1642"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5036f2f024cac40a02ea6ea70de2c3a4407d16bc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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