CVE-2013-1956 Security feature bypass in n/a

What is CVE-2013-1956?

CVE-2013-1956 is a low-severity vulnerability in Linux kernel, published on 24 Apr 2013. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-264

Which versions are affected by CVE-2013-1956?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2013-1956?

Upgrade to a fixed version.

Is CVE-2013-1956 being exploited?

There is no known exploitation of CVE-2013-1956 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2013-1956, GHSA-2wv8-r8jx-c9hx.