The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.
Advisories
Source ID Title
EUVD EUVD EUVD-2013-1946 The create_user_ns function in kernel/user_namespace.c in the Linux kernel before 3.8.6 does not check whether a chroot directory exists that differs from the namespace root directory, which allows local users to bypass intended filesystem restrictions via a crafted clone system call.
Fixes

Solution

No solution given by the vendor.


Workaround

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History

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T15:20:37.306Z

Reserved: 2013-02-19T00:00:00Z

Link: CVE-2013-1956

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2013-04-24T19:55:01.003

Modified: 2025-04-11T00:51:21.963

Link: CVE-2013-1956

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses