CVE-2026-53168
fuse: reject fuse_notify() pagecache ops on directories
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jun 25, 2026 |
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Affected Versions
Linux / Linux
5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < 15487f98863dc7156ed43c5be26d478beb82ba35 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < bd23fa0c16c5c86e5b7713224ffbb87d9db81cca 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < 9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < dd92773d4d9cea010474eb08a5133c14ff6ab53a 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < 99c317d7f8b7bbf3de16d20a01f363e390114cea 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < 12df4cfa738aefff21756728e91056d7defb0fe6 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < e692f0cb86204dcdb9dddc0b355407eda6394a67 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < 9c954499d43aefac01c5dfb57a82b13d2dcf4b94
Linux / Linux
4.20
References
git.kernel.org: https://git.kernel.org/stable/c/15487f98863dc7156ed43c5be26d478beb82ba35 git.kernel.org: https://git.kernel.org/stable/c/bd23fa0c16c5c86e5b7713224ffbb87d9db81cca git.kernel.org: https://git.kernel.org/stable/c/9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6 git.kernel.org: https://git.kernel.org/stable/c/dd92773d4d9cea010474eb08a5133c14ff6ab53a git.kernel.org: https://git.kernel.org/stable/c/99c317d7f8b7bbf3de16d20a01f363e390114cea git.kernel.org: https://git.kernel.org/stable/c/12df4cfa738aefff21756728e91056d7defb0fe6 git.kernel.org: https://git.kernel.org/stable/c/e692f0cb86204dcdb9dddc0b355407eda6394a67 git.kernel.org: https://git.kernel.org/stable/c/9c954499d43aefac01c5dfb57a82b13d2dcf4b94