vulnerability
Red Hat: CVE-2025-38247: kernel: userns and mnt_idmap leak in open_tree_attr(2)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Jul 9, 2025 | Jul 10, 2025 | Jul 11, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Jul 9, 2025
Added
Jul 10, 2025
Modified
Jul 11, 2025
Description
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.
Solution
no-fix-redhat-rpm-package
References
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