Util-linux: util-linux: x-mount.subdir detached-tree resolution can escape via intermediate symlinks
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| Red Hat | Red Hat Hardened Images | affected |
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| Red Hat | Red Hat Enterprise Linux 10 | unaffected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 7 | unaffected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 8 | unaffected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 9 | unaffected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 9 | unaffected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 9 | unaffected | — | ||||||
| Red Hat | Red Hat OpenShift Container Platform 4 | unaffected | — | ||||||
| Red Hat | Red Hat OpenShift Container Platform 4 | unaffected | — | ||||||
| Red Hat | Red Hat OpenShift Container Platform 5 | unaffected | — |
No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Util-linux |
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| Redhat | Enterprise Linux |
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| Redhat | Hardened Images |
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| Redhat | Openshift Container Platform |
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Vendor Workaround
Upgrade to util-linux v2.41.6, v2.42.3, or later. Until a fix is applied, do not allow unprivileged /etc/fstab entries that specify X-mount.subdir.
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.189% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat rhel Els
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| CPEs | cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
cpe:/a:redhat:enterprise_linux:10 cpe:/a:redhat:enterprise_linux:8 cpe:/a:redhat:enterprise_linux:9 cpe:/a:redhat:openshift:5 cpe:/o:redhat:rhel_els:7 |
| Vendors & Products |
Redhat rhel Els
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Linux
Linux util-linux Redhat hardened Images Redhat openshift Container Platform |
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| Vendors & Products |
Linux
Linux util-linux Redhat hardened Images Redhat openshift Container Platform |
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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| Type | Values Removed | Values Added |
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| References |
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| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| Description | The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to open_tree() with AT_SYMLINK_NOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with an fstab-authorized X-mount.subdir entry can attach a host path at the intended mountpoint. | |
| Title | Util-linux: util-linux: x-mount.subdir detached-tree resolution can escape via intermediate symlinks | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat openshift |
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| Weaknesses | CWE-59 | |
| CPEs | cpe:/a:redhat:hummingbird:1 cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat openshift |
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| References |
| |
| Metrics |
cvssV3_1
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