FKIE_CVE-2026-53168

Vulnerability from fkie_nvd - Published: 2026-06-25 09:16 - Updated: 2026-06-30 14:44
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/12df4cfa738aefff21756728e91056d7defb0fe6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/15487f98863dc7156ed43c5be26d478beb82ba35
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/99c317d7f8b7bbf3de16d20a01f363e390114cea
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9c954499d43aefac01c5dfb57a82b13d2dcf4b94
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bd23fa0c16c5c86e5b7713224ffbb87d9db81cca
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd92773d4d9cea010474eb08a5133c14ff6ab53a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e692f0cb86204dcdb9dddc0b355407eda6394a67
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/fuse/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "15487f98863dc7156ed43c5be26d478beb82ba35",
              "status": "affected",
              "version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0",
              "versionType": "git"
            },
            {
              "lessThan": "bd23fa0c16c5c86e5b7713224ffbb87d9db81cca",
              "status": "affected",
              "version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0",
              "versionType": "git"
            },
            {
              "lessThan": "9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6",
              "status": "affected",
              "version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0",
              "versionType": "git"
            },
            {
              "lessThan": "dd92773d4d9cea010474eb08a5133c14ff6ab53a",
              "status": "affected",
              "version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0",
              "versionType": "git"
            },
            {
              "lessThan": "99c317d7f8b7bbf3de16d20a01f363e390114cea",
              "status": "affected",
              "version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0",
              "versionType": "git"
            },
            {
              "lessThan": "12df4cfa738aefff21756728e91056d7defb0fe6",
              "status": "affected",
              "version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0",
              "versionType": "git"
            },
            {
              "lessThan": "e692f0cb86204dcdb9dddc0b355407eda6394a67",
              "status": "affected",
              "version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0",
              "versionType": "git"
            },
            {
              "lessThan": "9c954499d43aefac01c5dfb57a82b13d2dcf4b94",
              "status": "affected",
              "version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/fuse/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.20"
            },
            {
              "lessThan": "4.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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": "CVE-2026-53168",
  "lastModified": "2026-06-30T14:44:27.313",
  "metrics": {},
  "published": "2026-06-25T09:16:34.170",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/12df4cfa738aefff21756728e91056d7defb0fe6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/15487f98863dc7156ed43c5be26d478beb82ba35"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/99c317d7f8b7bbf3de16d20a01f363e390114cea"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9c954499d43aefac01c5dfb57a82b13d2dcf4b94"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bd23fa0c16c5c86e5b7713224ffbb87d9db81cca"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dd92773d4d9cea010474eb08a5133c14ff6ab53a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e692f0cb86204dcdb9dddc0b355407eda6394a67"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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