clone_private_mnt(): make sure that caller has CAP_SYS_ADMIN in the right userns
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.
CVE-2025-38499
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-38499
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "427215d85e8d1476da1a86b8d67aceb485eb3631",
"lessThan": "36fecd740de2d542d2091d65d36554ee2bcf9c65",
"versionType": "git"
},
{
"status": "affected",
"version": "427215d85e8d1476da1a86b8d67aceb485eb3631",
"lessThan": "d717325b5ecf2a40daca85c61923e17f32306179",
"versionType": "git"
},
{
"status": "affected",
"version": "427215d85e8d1476da1a86b8d67aceb485eb3631",
"lessThan": "dc6a664089f10eab0fb36b6e4f705022210191d2",
"versionType": "git"
},
{
"status": "affected",
"version": "427215d85e8d1476da1a86b8d67aceb485eb3631",
"lessThan": "e77078e52fbf018ab986efb3c79065ab35025607",
"versionType": "git"
},
{
"status": "affected",
"version": "427215d85e8d1476da1a86b8d67aceb485eb3631",
"lessThan": "38628ae06e2a37770cd794802a3f1310cf9846e3",
"versionType": "git"
},
{
"status": "affected",
"version": "427215d85e8d1476da1a86b8d67aceb485eb3631",
"lessThan": "c28f922c9dcee0e4876a2c095939d77fe7e15116",
"versionType": "git"
},
{
"status": "affected",
"version": "c6e8810d25295acb40a7b69ed3962ff181919571",
"versionType": "git"
},
{
"status": "affected",
"version": "e3eee87c846dc47f6d8eb6d85e7271f24122a279",
"versionType": "git"
},
{
"status": "affected",
"version": "517b875dfbf58f0c6c9e32dc90f5cf42d71a42ce",
"versionType": "git"
},
{
"status": "affected",
"version": "963d85d630dabe75a3cfde44a006fec3304d07b8",
"versionType": "git"
},
{
"status": "affected",
"version": "812f39ed5b0b7f34868736de3055c92c7c4cf459",
"versionType": "git"
},
{
"status": "affected",
"version": "6a002d48a66076524f67098132538bef17e8445e",
"versionType": "git"
},
{
"status": "affected",
"version": "41812f4b84484530057513478c6770590347dc30",
"versionType": "git"
},
{
"status": "affected",
"version": "4.4.281",
"lessThan": "4.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.9.280",
"lessThan": "4.10",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.14.244",
"lessThan": "4.15",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.19.204",
"lessThan": "4.20",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.4.141",
"lessThan": "5.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.10.59",
"lessThan": "5.11",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.13.11",
"lessThan": "5.14",
"versionType": "semver"
}
],
"programFiles": [
"fs/namespace.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.190",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.147",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.100",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.40",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.15.3",
"versionType": "semver",
"lessThanOrEqual": "6.15.*"
},
{
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/namespace.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-38499
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30580 · Revision 1
- Added to Heist Feed
- Publisher date