CVE-2025-38247
userns and mnt_idmap leak in open_tree_attr(2)
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: userns and mnt_idmap leak in open_tree_attr(2) Once want_mount_setattr() has returned a positive, it does require finish_mount_kattr() to release ->mnt_userns. Failing do_mount_setattr() does not change that. As the result, we can end up leaking userns and possibly mnt_idmap as well.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 9, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
c4a16820d90199409c9bf01c4f794e1e9e8d8fd8 < 142db4e76110dd80239f4e79810f85ea1735ad60 c4a16820d90199409c9bf01c4f794e1e9e8d8fd8 < 0748e553df0225754c316a92af3a77fdc057b358
Linux / Linux
6.15