CVE-2025-38499 - CVE House
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Status published Unknown CVE-2025-38499

clone_private_mnt(): make sure that caller has CAP_SYS_ADMIN in the right userns

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: clone_private_mnt(): make sure that caller has CAP_SYS_ADMIN in the right userns What we want is to verify there is that clone won't expose something hidden by a mount we wouldn't be able to undo. "Wouldn't be able to undo" may be a result of MNT_LOCKED on a child, but it may also come from lacking admin rights in the userns of the namespace mount belongs to. clone_private_mnt() checks the former, but not the latter. There's a number of rather confusing CAP_SYS_ADMIN checks in various userns during the mount, especially with the new mount API; they serve different purposes and in case of clone_private_mnt() they usually, but not always end up covering the missing check mentioned above.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
427215d85e8d1476da1a86b8d67aceb485eb3631, c6e8810d25295acb40a7b69ed3962ff181919571, e3eee87c846dc47f6d8eb6d85e7271f24122a279, 517b875dfbf58f0c6c9e32dc90f5cf42d71a42ce, 963d85d630dabe75a3cfde44a006fec3304d07b8, 812f39ed5b0b7f34868736de3055c92c7c4cf459, 6a002d48a66076524f67098132538bef17e8445e, 41812f4b84484530057513478c6770590347dc30, 4.4.281, 4.9.280, 4.14.244, 4.19.204, 5.4.141, 5.10.59, 5.13.11, 5.14, 0, 5.15.190, 6.1.147, 6.6.100, 6.12.40, 6.15.3, 6.16

Timeline

Official Publish: August 11th, 2025
Last Modified: July 14th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.