CVE-2025-38499 (GCVE-0-2025-38499)
Vulnerability from cvelistv5
Published
2025-08-11 16:01
Modified
2025-08-28 14:43
Severity ?
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/36fecd740de2d542d2091d65d36554ee2bcf9c65
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/38628ae06e2a37770cd794802a3f1310cf9846e3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c28f922c9dcee0e4876a2c095939d77fe7e15116
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d717325b5ecf2a40daca85c61923e17f32306179
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dc6a664089f10eab0fb36b6e4f705022210191d2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e77078e52fbf018ab986efb3c79065ab35025607
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
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   Linux Linux Version: 5.14
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{
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      "providerMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38499",
    "datePublished": "2025-08-11T16:01:08.257Z",
    "dateReserved": "2025-04-16T04:51:24.022Z",
    "dateUpdated": "2025-08-28T14:43:32.428Z",
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  }
}


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