What is CVE-2011-0726?

CVE-2011-0726 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-2011-0726 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2011-0726?

CVE-2011-0726 has a CVSS score of 2.1 out of 10, rated Low severity. The vector string is AV:L/AC:L/Au:N/C:P/I:N/A:N.

Is there a patch available for CVE-2011-0726?

No patch is currently available for CVE-2011-0726. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2011-0726 actively exploited?

CVE-2011-0726 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2011-0726

Low

The do_task_stat function in fs/proc/array.c in the Linux kernel before 2.6.39-rc1 does not perform an expected uid check, which makes it easier for local users to defeat the ASLR protection mechanism by reading the start_code and end_code fields in the /proc/#####/stat file for a process executing a PIE binary.

Package Linux Kernel

Published 2011-07-18

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

None

Vector string

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

Weakness type

CWE-20

CVE-2011-0726 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-2011-0726 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Downloads
http://downloads.avaya.com/css/P8/documents/100145416
Red Hat
http://rhn.redhat.com/errata/RHSA-2011-0833.html
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.39/ChangeLog-2.6.39-rc1
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=684569
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5883f57ca0008ffc93e09cbb9847a1928e50c6f3
Patch
Kernel patch commit
http://www.securityfocus.com/bid/47791
Patch
Kernel patch commit
http://www.spinics.net/lists/mm-commits/msg82726.html
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2011-0726

Severity Low

CVSS score 2.1 / 10

CVSS version 2.0

Published 2011-07-18

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2011-0726?

CVE-2011-0726 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-2011-0726 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2011-0726?

CVE-2011-0726 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:P/I:N/A:N.
Is there a patch available for CVE-2011-0726?

No patch is currently available for CVE-2011-0726. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2011-0726 actively exploited?

No — CVE-2011-0726 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 →