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Users will not\ngenerally observe atime/mtime changes when other users read/write to\nspecial files, only when someone sets atime/mtime via utimensat().\n\nAlign fsnotify events with this stat behavior and do not generate\nACCESS/MODIFY events to parent watchers on read/write of special files.\nThe events are still generated to parent watchers on utimensat(). 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Users will not\ngenerally observe atime/mtime changes when other users read/write to\nspecial files, only when someone sets atime/mtime via utimensat().\n\nAlign fsnotify events with this stat behavior and do not generate\nACCESS/MODIFY events to parent watchers on read/write of special files.\nThe events are still generated to parent watchers on utimensat(). This\ncloses some side-channels that could be possibly used for information\nexfiltration [1].\n\n[1] https://snee.la/pdf/pubs/file-notification-attacks.pdf"}],"providerMetadata":{"dateUpdated":"2026-05-11T21:53:22.202Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/df2711544b050aba703e6da418c53c7dc5d443ca"},{"url":"https://git.kernel.org/stable/c/859bdf438f01d9aa7f84b09c1202d548c7cad9e8"},{"url":"https://git.kernel.org/stable/c/6a7d7d96eeeab7af2bd01afbb3d9878a11a13d91"},{"url":"https://git.kernel.org/stable/c/e0643d46759db8b84c0504a676043e5e341b6c81"},{"url":"https://git.kernel.org/stable/c/82f7416bcbd951549e758d15fc1a96a5afc2e900"},{"url":"https://git.kernel.org/stable/c/7a93edb23bcf07a3aaf8b598edfc2faa8fbcc0b6"},{"url":"https://git.kernel.org/stable/c/635bc4def026a24e071436f4f356ea08c0eed6ff"}],"title":"fsnotify: do not generate ACCESS/MODIFY events on child for special files","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2025-68788","datePublished":"2026-01-13T15:29:01.270Z","dateReserved":"2025-12-24T10:30:51.037Z","dateUpdated":"2026-07-14T12:44:18.124Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-01-13 16:15:58","lastModifiedDate":"2026-07-14 13:18:00","problem_types":[],"metrics":{"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-16T16:22:25.274360Z","id":"CVE-2025-68788","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"68788","Ordinal":"1","Title":"fsnotify: do not generate ACCESS/MODIFY events on child for spec","CVE":"CVE-2025-68788","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"68788","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfsnotify: do not generate ACCESS/MODIFY events on child for special files\n\ninotify/fanotify do not allow users with no read access to a file to\nsubscribe to events (e.g. IN_ACCESS/IN_MODIFY), but they do allow the\nsame user to subscribe for watching events on children when the user\nhas access to the parent directory (e.g. /dev).\n\nUsers with no read access to a file but with read access to its parent\ndirectory can still stat the file and see if it was accessed/modified\nvia atime/mtime change.\n\nThe same is not true for special files (e.g. /dev/null). 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