CVE-2011-2928

Public Exploit

Description

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.

Category

4.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.08%
Third-Party Advisory securityreason.com Third-Party Advisory openwall.com Third-Party Advisory openwall.com Third-Party Advisory pre-cert.de Third-Party Advisory securityfocus.com Third-Party Advisory securityfocus.com Third-Party Advisory ibmcloud.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2011/08/19/5 mailing list patch exploit third party advisory
http://www.pre-cert.de/advisories/PRE-SA-2011-06.txt third party advisory exploit
http://www.securityfocus.com/bid/49256 vdb entry third party advisory
http://www.openwall.com/lists/oss-security/2011/08/19/1 mailing list patch exploit third party advisory
http://www.securityfocus.com/archive/1/519387/100/0/threaded mailing list exploit vdb entry third party advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=338d0f0a6fbc82407864606f5b64b75aeb3c70f2
https://exchange.xforce.ibmcloud.com/vulnerabilities/69343 vdb entry third party advisory
http://securityreason.com/securityalert/8360 third party advisory exploit
http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.1-rc3 broken link

Frequently Asked Questions

What is the severity of CVE-2011-2928?
CVE-2011-2928 has been scored as a medium severity vulnerability.
How to fix CVE-2011-2928?
To fix CVE-2011-2928, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-2928 being actively exploited in the wild?
It is possible that CVE-2011-2928 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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