What is CVE-2012-6543?

CVE-2012-6543 is a Low severity Linux kernel vulnerability with a CVSS score of 1.9 out of 10, classified as a Information Exposure flaw (CWE-200). CVE-2012-6543 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2012-6543?

CVE-2012-6543 has a CVSS score of 1.9 out of 10, rated Low severity. The vector string is AV:L/AC:M/Au:N/C:P/I:N/A:N.

Is there a patch available for CVE-2012-6543?

No patch is currently available for CVE-2012-6543. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2012-6543 actively exploited?

CVE-2012-6543 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Information Exposure (CWE-200)?

The product exposes sensitive information to an actor not authorised to see it. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/200.html

CVE-2012-6543

Low

The l2tp_ip6_getname function in net/l2tp/l2tp_ip6.c in the Linux kernel before 3.6 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.

Package Linux Kernel

Published 2013-03-15

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

1.9

out of 10

Low

Attack Vector

Local

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

None

Availability

None

Vector string

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

Weakness type

CWE-200

CVE-2012-6543 is a Information Exposure vulnerability

What is Information Exposure?

The product exposes sensitive information to an actor not authorised to see it. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2012-6543 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Openwall
http://www.openwall.com/lists/oss-security/2013/03/05/13
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=04d4fbca1017c11381e7d82acea21dd741e748bc
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/04d4fbca1017c11381e7d82acea21dd741e748bc
Patch
Kernel patch commit
https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.6.bz2
Patch

Details

CVE ID CVE-2012-6543

Severity Low

CVSS score 1.9 / 10

CVSS version 2.0

Published 2013-03-15

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2012-6543?

CVE-2012-6543 is a Low severity Linux kernel vulnerability with a CVSS score of 1.9 out of 10 , classified as an Information Exposure flaw (CWE-200) . CVE-2012-6543 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2012-6543?

CVE-2012-6543 has a CVSS score of 1.9 out of 10, rated Low severity (CVSS 2.0). The vector string is AV:L/AC:M/Au:N/C:P/I:N/A:N.
Is there a patch available for CVE-2012-6543?

No patch is currently available for CVE-2012-6543. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2012-6543 actively exploited?

No — CVE-2012-6543 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Information Exposure (CWE-200)?

The product exposes sensitive information to an actor not authorised to see it. View CWE-200 on MITRE CWE →