What is CVE-2012-6657?

CVE-2012-6657 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10, classified as a Permissions, Privileges and Access Control flaw (CWE-264). CVE-2012-6657 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2012-6657?

CVE-2012-6657 has a CVSS score of 4.9 out of 10, rated Medium severity. The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2012-6657?

No patch is currently available for CVE-2012-6657. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2012-6657 actively exploited?

CVE-2012-6657 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-2012-6657

Medium

The sock_setsockopt function in net/core/sock.c in the Linux kernel before 3.5.7 does not ensure that a keepalive action is associated with a stream socket, which allows local users to cause a denial of service (system crash) by leveraging the ability to create a raw socket.

Package Linux Kernel

Published 2014-09-28

Last modified 2026-05-06

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

4.9

out of 10

Medium

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:C

Weakness type

CWE-264

CVE-2012-6657 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-2012-6657 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html
Lists
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
Marc
http://marc.info/?l=bugtraq&m=142722450701342&w=2
Marc
http://marc.info/?l=bugtraq&m=142722544401658&w=2
Kernel.org
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.5.7

Vendor Advisory
Openwall
http://www.openwall.com/lists/oss-security/2014/09/15/8
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1141742
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3e10986d1d698140747fcfc2761ec9cb64c1d582
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/3e10986d1d698140747fcfc2761ec9cb64c1d582
Patch

Details

CVE ID CVE-2012-6657

Severity Medium

CVSS score 4.9 / 10

CVSS version 2.0

Published 2014-09-28

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2012-6657?

CVE-2012-6657 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10 , classified as a Permissions, Privileges and Access Control flaw (CWE-264) . CVE-2012-6657 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2012-6657?

CVE-2012-6657 has a CVSS score of 4.9 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2012-6657?

No patch is currently available for CVE-2012-6657. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2012-6657 actively exploited?

No — CVE-2012-6657 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 →