Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 to < 15487f98863dc7156ed43c5be26d478beb82ba35affected5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 to < bd23fa0c16c5c86e5b7713224ffbb87d9db81ccaaffected5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 to < 9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6affected5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 to < dd92773d4d9cea010474eb08a5133c14ff6ab53aaffected5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 to < 99c317d7f8b7bbf3de16d20a01f363e390114ceaaffected5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 to < 12df4cfa738aefff21756728e91056d7defb0fe6affected5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 to < e692f0cb86204dcdb9dddc0b355407eda6394a67affected5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 to < 9c954499d43aefac01c5dfb57a82b13d2dcf4b94affected
Linux Linux
Default version status: affected
4.20affected0 to < 4.20unaffected5.10.259 to ≤ 5.10.*unaffected5.15.210 to ≤ 5.15.*unaffected6.1.176 to ≤ 6.1.*unaffected6.6.143 to ≤ 6.6.*unaffected6.12.94 to ≤ 6.12.*unaffected6.18.36 to ≤ 6.18.*unaffected7.0.13 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/15487f98863dc7156ed43c5be26d478beb82ba35 ↗
- https://git.kernel.org/stable/c/bd23fa0c16c5c86e5b7713224ffbb87d9db81cca ↗
- https://git.kernel.org/stable/c/9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6 ↗
- https://git.kernel.org/stable/c/dd92773d4d9cea010474eb08a5133c14ff6ab53a ↗
- https://git.kernel.org/stable/c/99c317d7f8b7bbf3de16d20a01f363e390114cea ↗
- https://git.kernel.org/stable/c/12df4cfa738aefff21756728e91056d7defb0fe6 ↗
- https://git.kernel.org/stable/c/e692f0cb86204dcdb9dddc0b355407eda6394a67 ↗
- https://git.kernel.org/stable/c/9c954499d43aefac01c5dfb57a82b13d2dcf4b94 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗