SCM_RIGHTS file descriptor passing did not preserve FD_RESOLVE_BENEATH when a descriptor was transferred. A process could clear the restriction by sending the descriptor to itself over a Unix domain socket.
A process in a jail that has received a directory file descriptor from another jail can use these techniques to escape the jail's filesystem root restriction.
A process in a jail that has received a directory file descriptor from another jail can use these techniques to escape the jail's filesystem root restriction.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FreeBSD | FreeBSD | unknown |
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Project Subscriptions
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Advisories
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Fixes
Solution
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Workaround
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References
History
Thu, 15 Oct 2026 07:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | SCM_RIGHTS file descriptor passing did not preserve FD_RESOLVE_BENEATH when a descriptor was transferred. A process could clear the restriction by sending the descriptor to itself over a Unix domain socket. A process in a jail that has received a directory file descriptor from another jail can use these techniques to escape the jail's filesystem root restriction. | |
| Title | Multiple jail filesystem root escapes | |
| Weaknesses | CWE-273 CWE-281 |
|
| References |
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Projects
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MITRE
Status: PUBLISHED
Assigner: freebsd
Published:
Updated: 2026-10-15T06:46:25.804Z
Reserved: 2026-09-28T13:33:02.323Z
Link: CVE-2026-101306
Vulnrichment
No data.
NVD
Status : Awaiting Analysis
Published: 2026-10-15T07:17:57.780
Modified: 2026-10-15T16:17:41.437
Link: CVE-2026-101306
Redhat
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OpenCVE Enrichment
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