What is CVE-2010-4256?

CVE-2010-4256 is a Low severity Linux kernel vulnerability with a CVSS score of 2.1 out of 10, classified as a Improper Input Validation flaw (CWE-20). CVE-2010-4256 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2010-4256?

CVE-2010-4256 has a CVSS score of 2.1 out of 10, rated Low severity. The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:P.

Is there a patch available for CVE-2010-4256?

No patch is currently available for CVE-2010-4256. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2010-4256 actively exploited?

CVE-2010-4256 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2010-4256

Low

The pipe_fcntl function in fs/pipe.c in the Linux kernel before 2.6.37 does not properly determine whether a file is a named pipe, which allows local users to cause a denial of service via an F_SETPIPE_SZ fcntl call.

Package Linux Kernel

Published 2011-01-25

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

2.1

out of 10

Low

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

None

Availability

Vector string

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

Weakness type

CWE-20

CVE-2010-4256 is a Improper Input Validation vulnerability

What is Improper Input Validation?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2010-4256 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37

Broken Link
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c66fb347946ebdd5b10908866ecc9fa05ee2cf3d
Patch
Kernel patch commit
http://openwall.com/lists/oss-security/2010/11/30/6
Patch
Kernel patch commit
http://openwall.com/lists/oss-security/2010/11/30/9
Patch

Details

CVE ID CVE-2010-4256

Severity Low

CVSS score 2.1 / 10

CVSS version 2.0

Published 2011-01-25

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2010-4256?

CVE-2010-4256 is a Low severity Linux kernel vulnerability with a CVSS score of 2.1 out of 10 , classified as an Improper Input Validation flaw (CWE-20) . CVE-2010-4256 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2010-4256?

CVE-2010-4256 has a CVSS score of 2.1 out of 10, rated Low severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:P.
Is there a patch available for CVE-2010-4256?

No patch is currently available for CVE-2010-4256. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2010-4256 actively exploited?

No — CVE-2010-4256 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Improper Input Validation (CWE-20)?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. View CWE-20 on MITRE CWE →