CVE-2026-53168
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-06-25
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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 Software (16)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < 15487f98863dc7156ed43c5be26d478beb82ba35 |
| Linux | Linux | 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < bd23fa0c16c5c86e5b7713224ffbb87d9db81cca |
| Linux | Linux | 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < 9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6 |
| Linux | Linux | 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < dd92773d4d9cea010474eb08a5133c14ff6ab53a |
| Linux | Linux | 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < 99c317d7f8b7bbf3de16d20a01f363e390114cea |
| Linux | Linux | 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < 12df4cfa738aefff21756728e91056d7defb0fe6 |
| Linux | Linux | 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < e692f0cb86204dcdb9dddc0b355407eda6394a67 |
| Linux | Linux | 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 < 9c954499d43aefac01c5dfb57a82b13d2dcf4b94 |
| Linux | Linux | 4.20 |
| linux | linux_kernel | 4.20 – 5.10.259 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |