What is CVE-2011-2184?

CVE-2011-2184 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476). CVE-2011-2184 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2011-2184?

CVE-2011-2184 has a CVSS score of 7.2 out of 10, rated High severity. The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.

Is there a patch available for CVE-2011-2184?

No patch is currently available for CVE-2011-2184. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2011-2184 actively exploited?

CVE-2011-2184 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2011-2184

High

The key_replace_session_keyring function in security/keys/process_keys.c in the Linux kernel before 2.6.39.1 does not initialize a certain structure member, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via a KEYCTL_SESSION_TO_PARENT argument to the keyctl function, a different vulnerability than CVE-2010-2960.

Package Linux Kernel

Published 2011-09-06

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

7.2

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

Availability

Vector string

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

Weakness type

CWE-476

CVE-2011-2184 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2011-2184 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Alt
http://alt.swiecki.net/linux_kernel/sys_open-kmem_cache_alloc-2.6.39-rc4.txt

Broken Link
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39.1

Broken Link
Lkml
https://lkml.org/lkml/2011/5/23/199

Third Party Advisory
Lkml
https://lkml.org/lkml/2011/5/24/502

Third Party Advisory
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f7285b5d631fd6096b11c6af0058ed3a2b30ef4e
Patch
Kernel patch commit
http://securityreason.com/securityalert/8371
Patch
Kernel patch commit
http://www.openwall.com/lists/oss-security/2011/06/03/2
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2011-2184

Severity High

CVSS score 7.2 / 10

CVSS version 2.0

Published 2011-09-06

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2011-2184?

CVE-2011-2184 is a High severity Linux kernel vulnerability with a CVSS score of 7.2 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . CVE-2011-2184 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2011-2184?

CVE-2011-2184 has a CVSS score of 7.2 out of 10, rated High severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:C/I:C/A:C.
Is there a patch available for CVE-2011-2184?

No patch is currently available for CVE-2011-2184. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2011-2184 actively exploited?

No — CVE-2011-2184 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. View CWE-476 on MITRE CWE →