CVE-2013-4205

4.7 MEDIUM 0.5% exploit odds Fix listed

What it is

Memory leak in the unshare_userns function in kernel/user_namespace.c in the Linux kernel before 3.10.6 allows local users to cause a denial of service (memory consumption) via an invalid CLONE_NEWUSER unshare call.

At a glance

Exploitability: Can be exploited locally on the machine without logging in. High risk of service disruption.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2013-08-25 03:27 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:56 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.5% in the next 30 days (EPSS).
Severity: 4.7 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2013-08-25 03:27 UTC
Last modified: 2026-06-16 23:56 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Weakness: CWE-399
Record status: Modified

Affected

Linux Kernel ≤ 3.10.5
Linux Kernel 3.0
Linux Kernel 3.0.1
Linux Kernel 3.0.2
Linux Kernel 3.0.3
Linux Kernel 3.0.4
Linux Kernel 3.0.5
Linux Kernel 3.0.6

Attack profile CVSS 2.0 · 4.7

Attack vector: Local
Complexity: Medium
Authentication: None
Confidentiality: None
Integrity: None
Availability: Complete

Raw vector

AV:L/AC:M/Au:N/C:N/I:N/A:C

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2013-4205.md and follow it. Check whether this project is affected by CVE-2013-4205. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record