{"id":"CVE-2026-53168","summary":"fuse: reject fuse_notify() pagecache ops on directories","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.","modified":"2026-07-08T08:13:45.132441157Z","published":"2026-06-25T08:38:47.420Z","related":["CGA-cr94-h3wr-288g"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53168.json"},"references":[{"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"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53168.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53168"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0"},{"fixed":"15487f98863dc7156ed43c5be26d478beb82ba35"},{"fixed":"bd23fa0c16c5c86e5b7713224ffbb87d9db81cca"},{"fixed":"9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6"},{"fixed":"dd92773d4d9cea010474eb08a5133c14ff6ab53a"},{"fixed":"99c317d7f8b7bbf3de16d20a01f363e390114cea"},{"fixed":"12df4cfa738aefff21756728e91056d7defb0fe6"},{"fixed":"e692f0cb86204dcdb9dddc0b355407eda6394a67"},{"fixed":"9c954499d43aefac01c5dfb57a82b13d2dcf4b94"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53168.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.10.259"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.210"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.176"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.143"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.94"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.36"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.13"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53168.json"}}],"schema_version":"1.7.5"}