What is CVE-2013-1858?

CVE-2013-1858 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10, classified as a Permissions, Privileges and Access Control flaw (CWE-264). CVE-2013-1858 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2013-1858?

CVE-2013-1858 has a CVSS score of 7.2 out of 10, rated High severity. The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.

Is there a patch available for CVE-2013-1858?

No patch is currently available for CVE-2013-1858. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2013-1858 actively exploited?

CVE-2013-1858 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Permissions, Privileges and Access Control (CWE-264)?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/264.html

CVE-2013-1858

High

The clone system-call implementation in the Linux kernel before 3.8.3 does not properly handle a combination of the CLONE_NEWUSER and CLONE_FS flags, which allows local users to gain privileges by calling chroot and leveraging the sharing of the / directory between a parent process and a child process.

Package Linux Kernel

Published 2013-04-05

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

7.2

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

Availability

Vector string

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

Weakness type

CWE-264

CVE-2013-1858 is a Permissions, Privileges and Access Control vulnerability

What is Permissions, Privileges and Access Control?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2013-1858 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Stealth
http://stealth.openwall.net/xSports/clown-newuser.c

Exploit
Kernel.org
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3
Openwall
http://www.openwall.com/lists/oss-security/2013/03/14/6
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=921448
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e66eded8309ebf679d3d3c1f5820d1f2ca332c71
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/e66eded8309ebf679d3d3c1f5820d1f2ca332c71
Patch

Details

CVE ID CVE-2013-1858

Severity High

CVSS score 7.2 / 10

CVSS version 2.0

Published 2013-04-05

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2013-1858?

CVE-2013-1858 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10 , classified as a Permissions, Privileges and Access Control flaw (CWE-264) . CVE-2013-1858 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2013-1858?

CVE-2013-1858 has a CVSS score of 7.2 out of 10, rated High severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.
Is there a patch available for CVE-2013-1858?

No patch is currently available for CVE-2013-1858. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2013-1858 actively exploited?

No — CVE-2013-1858 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Permissions, Privileges and Access Control (CWE-264)?

Weaknesses in this category are related to the management of permissions, privileges, and access controls. View CWE-264 on MITRE CWE →