What is CVE-2011-2495?

CVE-2011-2495 is a Low severity Linux kernel vulnerability with a CVSS score of 2.1 out of 10, classified as a Permissions, Privileges and Access Control flaw (CWE-264). CVE-2011-2495 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2011-2495?

CVE-2011-2495 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-2011-2495?

No patch is currently available for CVE-2011-2495. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2011-2495 actively exploited?

CVE-2011-2495 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-2011-2495

Low

fs/proc/base.c in the Linux kernel before 2.6.39.4 does not properly restrict access to /proc/#####/io files, which allows local users to obtain sensitive I/O statistics by polling a file, as demonstrated by discovering the length of another user's password.

Package Linux Kernel

Published 2012-06-13

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-264

CVE-2011-2495 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-2011-2495 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Ftp
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.4
Red Hat
http://rhn.redhat.com/errata/RHSA-2011-1212.html
Openwall
http://www.openwall.com/lists/oss-security/2011/06/27/1
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=716825
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1d1221f375c94ef961ba8574ac4f85c8870ddd51
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/1d1221f375c94ef961ba8574ac4f85c8870ddd51
Patch

Details

CVE ID CVE-2011-2495

Severity Low

CVSS score 2.1 / 10

CVSS version 2.0

Published 2012-06-13

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2011-2495?

CVE-2011-2495 is a Low severity Linux kernel vulnerability with a CVSS score of 2.1 out of 10 , classified as a Permissions, Privileges and Access Control flaw (CWE-264) . CVE-2011-2495 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2011-2495?

CVE-2011-2495 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-2011-2495?

No patch is currently available for CVE-2011-2495. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2011-2495 actively exploited?

No — CVE-2011-2495 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 →