fuse: reject fuse_notify() pagecache ops on directories
Summary
| CVE | CVE-2026-53168 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-25 09:16:34 UTC |
| Updated | 2026-06-30 14:44:27 UTC |
| 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. |
Risk And Classification
EPSS: 0.001760000 probability, percentile 0.073830000 (date 2026-07-02)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 15487f98863dc7156ed43c5be26d478beb82ba35 git | Not specified |
| CNA | Linux | Linux | affected 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 bd23fa0c16c5c86e5b7713224ffbb87d9db81cca git | Not specified |
| CNA | Linux | Linux | affected 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6 git | Not specified |
| CNA | Linux | Linux | affected 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 dd92773d4d9cea010474eb08a5133c14ff6ab53a git | Not specified |
| CNA | Linux | Linux | affected 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 99c317d7f8b7bbf3de16d20a01f363e390114cea git | Not specified |
| CNA | Linux | Linux | affected 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 12df4cfa738aefff21756728e91056d7defb0fe6 git | Not specified |
| CNA | Linux | Linux | affected 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 e692f0cb86204dcdb9dddc0b355407eda6394a67 git | Not specified |
| CNA | Linux | Linux | affected 5d7bc7e8680c7ca4c8a4f139ce2a54ccb8131ef0 9c954499d43aefac01c5dfb57a82b13d2dcf4b94 git | Not specified |
| CNA | Linux | Linux | affected 4.20 | Not specified |
| CNA | Linux | Linux | unaffected 4.20 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.259 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.210 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.176 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.143 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.94 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.36 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.13 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/9dbf1b2fadfc6c40805631d8a8276d1639fc9ab6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e692f0cb86204dcdb9dddc0b355407eda6394a67 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/99c317d7f8b7bbf3de16d20a01f363e390114cea | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/15487f98863dc7156ed43c5be26d478beb82ba35 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/dd92773d4d9cea010474eb08a5133c14ff6ab53a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/bd23fa0c16c5c86e5b7713224ffbb87d9db81cca | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/9c954499d43aefac01c5dfb57a82b13d2dcf4b94 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/12df4cfa738aefff21756728e91056d7defb0fe6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.