What is CVE-2011-1021?

CVE-2011-1021 is a Low severity Linux kernel vulnerability with a CVSS score of 3.6 out of 10, classified as a Permissions, Privileges and Access Control flaw (CWE-264). CVE-2011-1021 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2011-1021?

CVE-2011-1021 has a CVSS score of 3.6 out of 10, rated Low severity. The vector string is AV:L/AC:L/Au:N/C:N/I:P/A:P.

Is there a patch available for CVE-2011-1021?

No patch is currently available for CVE-2011-1021. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2011-1021 actively exploited?

CVE-2011-1021 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-2011-1021

Low

drivers/acpi/debugfs.c in the Linux kernel before 3.0 allows local users to modify arbitrary kernel memory locations by leveraging root privileges to write to the /sys/kernel/debug/acpi/custom_method file. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-4347.

Package Linux Kernel

Published 2012-06-21

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

3.6

out of 10

Low

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

Availability

Vector string

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

Weakness type

CWE-264

CVE-2011-1021 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-2011-1021 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/v3.0/ChangeLog-3.0
Openwall
http://www.openwall.com/lists/oss-security/2011/02/25/5
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=680841
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=526b4af47f44148c9d665e57723ed9f86634c6e3
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/526b4af47f44148c9d665e57723ed9f86634c6e3
Patch

Details

CVE ID CVE-2011-1021

Severity Low

CVSS score 3.6 / 10

CVSS version 2.0

Published 2012-06-21

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2011-1021?

CVE-2011-1021 is a Low severity Linux kernel vulnerability with a CVSS score of 3.6 out of 10 , classified as a Permissions, Privileges and Access Control flaw (CWE-264) . CVE-2011-1021 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2011-1021?

CVE-2011-1021 has a CVSS score of 3.6 out of 10, rated Low severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:P/A:P.
Is there a patch available for CVE-2011-1021?

No patch is currently available for CVE-2011-1021. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2011-1021 actively exploited?

No — CVE-2011-1021 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 →