CVE-2026-53168 (GCVE-0-2026-53168)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-06-25 08:38
VLAI
Title
fuse: reject fuse_notify() pagecache ops on directories
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 , < 15487f98863dc7156ed43c5be26d478beb82ba35 (git)
Affected: 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 , < bd23fa0c16c5c86e5b7713224ffbb87d9db81cca (git)
Affected: 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 , < 9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6 (git)
Affected: 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 , < dd92773d4d9cea010474eb08a5133c14ff6ab53a (git)
Affected: 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 , < 99c317d7f8b7bbf3de16d20a01f363e390114cea (git)
Affected: 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 , < 12df4cfa738aefff21756728e91056d7defb0fe6 (git)
Affected: 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 , < e692f0cb86204dcdb9dddc0b355407eda6394a67 (git)
Affected: 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 , < 9c954499d43aefac01c5dfb57a82b13d2dcf4b94 (git)
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Linux Linux Affected: 4.20
Unaffected: 0 , < 4.20 (semver)
Unaffected: 5.10.259 , ≤ 5.10.* (semver)
Unaffected: 5.15.210 , ≤ 5.15.* (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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      "providerMetadata": {
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    "dateReserved": "2026-06-09T07:44:35.389Z",
    "dateUpdated": "2026-06-25T08:38:47.420Z",
    "state": "PUBLISHED"
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.