CVE-2025-38499 (GCVE-0-2025-38499)
Vulnerability from cvelistv5
Published
2025-08-11 16:01
Modified
2026-08-05 12:02
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 427215d85e8d1476da1a86b8d67aceb485eb3631
Version: 427215d85e8d1476da1a86b8d67aceb485eb3631
Version: 427215d85e8d1476da1a86b8d67aceb485eb3631
Version: 427215d85e8d1476da1a86b8d67aceb485eb3631
Version: 427215d85e8d1476da1a86b8d67aceb485eb3631
Version: 427215d85e8d1476da1a86b8d67aceb485eb3631
Version: c6e8810d25295acb40a7b69ed3962ff181919571
Version: e3eee87c846dc47f6d8eb6d85e7271f24122a279
Version: 517b875dfbf58f0c6c9e32dc90f5cf42d71a42ce
Version: 963d85d630dabe75a3cfde44a006fec3304d07b8
Version: 812f39ed5b0b7f34868736de3055c92c7c4cf459
Version: 6a002d48a66076524f67098132538bef17e8445e
Version: 41812f4b84484530057513478c6770590347dc30
Version: 4.4.281   ≤
Version: 4.9.280   ≤
Version: 4.14.244   ≤
Version: 4.19.204   ≤
Version: 5.4.141   ≤
Version: 5.10.59   ≤
Version: 5.13.11   ≤
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