Resource management error in Linux kernel

1) Resource management error

EUVDB-ID: #VU45146

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2011-1083

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: Yes

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The epoll implementation in the Linux kernel 2.6.37.2 and earlier does not properly traverse a tree of epoll file descriptors, which allows local users to cause a denial of service (CPU consumption) via a crafted application that makes epoll_create and epoll_ctl system calls.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.37.1

External links

http://article.gmane.org/gmane.linux.kernel/1105744
http://article.gmane.org/gmane.linux.kernel/1105888
http://article.gmane.org/gmane.linux.kernel/1106686
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
http://openwall.com/lists/oss-security/2011/03/02/1
http://openwall.com/lists/oss-security/2011/03/02/2
http://rhn.redhat.com/errata/RHSA-2012-0862.html
http://secunia.com/advisories/43522
http://secunia.com/advisories/48115
http://secunia.com/advisories/48410
http://secunia.com/advisories/48898
http://secunia.com/advisories/48964
http://www.osvdb.org/71265
http://bugzilla.redhat.com/show_bug.cgi?id=681578

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.