GHSA-R29V-CGXR-PGHG

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-06-25 09:31
VLAI
Details

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

fuse: reject fuse_notify() pagecache ops on directories

The operations FUSE_NOTIFY_STORE and FUSE_NOTIFY_RETRIEVE allow the FUSE daemon to actively write/read pagecache contents.

For directories with FOPEN_CACHE_DIR, the pagecache is used as kernel-internal cache storage, and userspace is not supposed to have direct access to this cache - in particular, fuse_parse_cache() will hit WARN_ON() if the cache contains bogus data.

Reject FUSE_NOTIFY_STORE and FUSE_NOTIFY_RETRIEVE on anything other than regular files with -EINVAL.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53168"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:34Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: reject fuse_notify() pagecache ops on directories\n\nThe operations FUSE_NOTIFY_STORE and FUSE_NOTIFY_RETRIEVE allow the\nFUSE daemon to actively write/read pagecache contents.\n\nFor directories with FOPEN_CACHE_DIR, the pagecache is used as\nkernel-internal cache storage, and userspace is not supposed to have\ndirect access to this cache - in particular, fuse_parse_cache() will hit\nWARN_ON() if the cache contains bogus data.\n\nReject FUSE_NOTIFY_STORE and FUSE_NOTIFY_RETRIEVE on anything other than\nregular files with -EINVAL.",
  "id": "GHSA-r29v-cgxr-pghg",
  "modified": "2026-06-25T09:31:19Z",
  "published": "2026-06-25T09:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53168"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/12df4cfa738aefff21756728e91056d7defb0fe6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/15487f98863dc7156ed43c5be26d478beb82ba35"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99c317d7f8b7bbf3de16d20a01f363e390114cea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9c954499d43aefac01c5dfb57a82b13d2dcf4b94"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bd23fa0c16c5c86e5b7713224ffbb87d9db81cca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd92773d4d9cea010474eb08a5133c14ff6ab53a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e692f0cb86204dcdb9dddc0b355407eda6394a67"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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