Vulnerability Details : CVE-2011-2928

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.

Vulnerability category: Denial of service

Published 2011-08-29 17:55:01

Updated 2023-02-13 04:32:12

Source Red Hat, Inc.

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2011-2928

Probability of exploitation activity in the next 30 days: 0.05%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 14 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2011-2928

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Source
4.9	MEDIUM	AV:L/AC:L/Au:N/C:N/I:N/A:C	3.9	6.9	[email protected]
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete

CWE ids for CVE-2011-2928

CWE-476 NULL Pointer Dereference

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Assigned by: [email protected] (Primary)

References for CVE-2011-2928

http://www.securityfocus.com/archive/1/519387/100/0/threaded

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

Third Party Advisory;VDB Entry
http://www.pre-cert.de/advisories/PRE-SA-2011-06.txt

Exploit;Third Party Advisory
http://www.openwall.com/lists/oss-security/2011/08/19/1

Exploit;Mailing List;Patch;Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=338d0f0a6fbc82407864606f5b64b75aeb3c70f2
http://securityreason.com/securityalert/8360

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

Broken Link
http://www.securityfocus.com/bid/49256

Third Party Advisory;VDB Entry
http://www.openwall.com/lists/oss-security/2011/08/19/5

Exploit;Mailing List;Patch;Third Party Advisory

Products affected by CVE-2011-2928

Linux » Linux Kernel
Versions before (<) 3.1
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel » Version: 3.1
cpe:2.3:o:linux:linux_kernel:3.1:-:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel » Version: 3.1 Update RC1
cpe:2.3:o:linux:linux_kernel:3.1:rc1:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel » Version: 3.1 Update RC2
cpe:2.3:o:linux:linux_kernel:3.1:rc2:*:*:*:*:*:*
Matching versions