What is CVE-2011-2928?

CVE-2011-2928 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476). CVE-2011-2928 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2011-2928?

CVE-2011-2928 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-2011-2928?

No patch is currently available for CVE-2011-2928. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2011-2928 actively exploited?

CVE-2011-2928 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-2011-2928

Medium

The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not validate the length attribute of long symlinks, which allows local users to cause a denial of service (incorrect pointer dereference and OOPS) by accessing a long symlink on a malformed Be filesystem.

Package Linux Kernel

Published 2011-08-29

Last modified 2026-04-29

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-476

CVE-2011-2928 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-2011-2928 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Securityreason
http://securityreason.com/securityalert/8360

Exploit Third Party Advisory
Kernel.org
http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.1-rc3

Broken Link
Pre-Cert
http://www.pre-cert.de/advisories/PRE-SA-2011-06.txt

Exploit Third Party Advisory
Securityfocus
http://www.securityfocus.com/archive/1/519387/100/0/threaded

Exploit Third Party Advisory VDB Entry
Securityfocus
http://www.securityfocus.com/bid/49256

Third Party Advisory VDB Entry
Exchange
https://exchange.xforce.ibmcloud.com/vulnerabilities/69343

Third Party Advisory VDB Entry
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=338d0f0a6fbc82407864606f5b64b75aeb3c70f2
Patch
Kernel patch commit
http://www.openwall.com/lists/oss-security/2011/08/19/1
Patch
Kernel patch commit
http://www.openwall.com/lists/oss-security/2011/08/19/5
Patch

Details

CVE ID CVE-2011-2928

Severity Medium

CVSS score 4.9 / 10

CVSS version 2.0

Published 2011-08-29

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2011-2928?

CVE-2011-2928 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . CVE-2011-2928 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2011-2928?

CVE-2011-2928 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-2011-2928?

No patch is currently available for CVE-2011-2928. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2011-2928 actively exploited?

No — CVE-2011-2928 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 →