{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53168", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.389Z", "datePublished": "2026-06-25T08:38:47.420Z", "dateUpdated": "2026-06-25T08:38:47.420Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-25T08:38:47.420Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/fuse/dev.c"], "versions": [{"version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0", "lessThan": "15487f98863dc7156ed43c5be26d478beb82ba35", "status": "affected", "versionType": "git"}, {"version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0", "lessThan": "bd23fa0c16c5c86e5b7713224ffbb87d9db81cca", "status": "affected", "versionType": "git"}, {"version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0", "lessThan": "9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6", "status": "affected", "versionType": "git"}, {"version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0", "lessThan": "dd92773d4d9cea010474eb08a5133c14ff6ab53a", "status": "affected", "versionType": "git"}, {"version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0", "lessThan": "99c317d7f8b7bbf3de16d20a01f363e390114cea", "status": "affected", "versionType": "git"}, {"version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0", "lessThan": "12df4cfa738aefff21756728e91056d7defb0fe6", "status": "affected", "versionType": "git"}, {"version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0", "lessThan": "e692f0cb86204dcdb9dddc0b355407eda6394a67", "status": "affected", "versionType": "git"}, {"version": "5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0", "lessThan": "9c954499d43aefac01c5dfb57a82b13d2dcf4b94", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/fuse/dev.c"], "versions": [{"version": "4.20", "status": "affected"}, {"version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.259", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.210", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.10.259"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.15.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.12.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/15487f98863dc7156ed43c5be26d478beb82ba35"}, {"url": "https://git.kernel.org/stable/c/bd23fa0c16c5c86e5b7713224ffbb87d9db81cca"}, {"url": "https://git.kernel.org/stable/c/9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6"}, {"url": "https://git.kernel.org/stable/c/dd92773d4d9cea010474eb08a5133c14ff6ab53a"}, {"url": "https://git.kernel.org/stable/c/99c317d7f8b7bbf3de16d20a01f363e390114cea"}, {"url": "https://git.kernel.org/stable/c/12df4cfa738aefff21756728e91056d7defb0fe6"}, {"url": "https://git.kernel.org/stable/c/e692f0cb86204dcdb9dddc0b355407eda6394a67"}, {"url": "https://git.kernel.org/stable/c/9c954499d43aefac01c5dfb57a82b13d2dcf4b94"}], "title": "fuse: reject fuse_notify() pagecache ops on directories", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{"bugzilla": {"description": "kernel: fuse: reject fuse_notify() pagecache ops on directories", "id": "2492705", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492705"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-266", "details": ["A flaw was found in the Linux kernel's Filesystem in Userspace (FUSE) component. The `fuse_notify()` function, specifically the `FUSE_NOTIFY_STORE` and `FUSE_NOTIFY_RETRIEVE` operations, allows the FUSE daemon to write or read pagecache contents. When these operations are performed on directories configured with `FOPEN_CACHE_DIR`, userspace can improperly access and manipulate kernel-internal cache storage. This could lead to system instability or a denial of service if the cache contains invalid data, potentially triggering a kernel warning."], "name": "CVE-2026-53168", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53168\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53168\nhttps://lore.kernel.org/linux-cve-announce/2026062551-CVE-2026-53168-7097@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0,15487f98863dc7156ed43c5be26d478beb82ba35)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[15487f98863dc7156ed43c5be26d478beb82ba35,bd23fa0c16c5c86e5b7713224ffbb87d9db81cca)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bd23fa0c16c5c86e5b7713224ffbb87d9db81cca,9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6,dd92773d4d9cea010474eb08a5133c14ff6ab53a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[dd92773d4d9cea010474eb08a5133c14ff6ab53a,99c317d7f8b7bbf3de16d20a01f363e390114cea)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[99c317d7f8b7bbf3de16d20a01f363e390114cea,12df4cfa738aefff21756728e91056d7defb0fe6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[12df4cfa738aefff21756728e91056d7defb0fe6,e692f0cb86204dcdb9dddc0b355407eda6394a67)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e692f0cb86204dcdb9dddc0b355407eda6394a67,9c954499d43aefac01c5dfb57a82b13d2dcf4b94)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[4.20,4.20]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.20)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.259,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.210,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.176,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.94,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.36,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-06-25T12:15:03.848346+00:00", "updated": "2026-06-26T16:30:03.428631+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}