PT-2011-2860 · Linux+3 · Linux Kernel+3

Nelson Elhage · Published 2011-04-03 · Updated 2020-08-12 · CVE-2011-1083

Positive Technologies (AI Summary)

CVSS v2.0

4.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.37.2

Description The issue is related to the epoll implementation in the Linux kernel, which does not properly traverse a tree of epoll file descriptors. This allows local users to cause a denial of service, specifically CPU consumption, by using a crafted application that makes epoll create and epoll ctl system calls.

Recommendations For Linux kernel versions prior to 2.6.37.2, consider upgrading to a newer version to resolve the issue. As a temporary workaround, restrict the use of the epoll create and epoll ctl system calls to minimize the risk of exploitation.

Exploit

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CESA-2012_0862

CVE-2011-1083

RHSA-2012:0150

RHSA-2012:0862

RHSA-2012:1129

RHSA-2012_0150

RHSA-2012_0862

SUSE-SU-2012_0554-1

SUSE-SU-2012_0616-1

SUSE-SU-2014_0287-1

Affected Products

Centos

Linux Kernel

Red Hat

Suse

References · 612

• 🔥 https://exploit-db.com/exploits/35403 · Exploit
• http://openwall.com/lists/oss-security/2011/03/02/1 · Patch
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-6546 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4470 · Security Note
• https://bdu.fstec.ru/vul/2015-04307 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-6540 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4483 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-4622 · Security Note
• https://bdu.fstec.ru/vul/2015-04310 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-3234 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2892 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=681578 · Patch
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-6548 · Security Note
• https://bdu.fstec.ru/vul/2015-05306 · Security Note
• https://bdu.fstec.ru/vul/2015-05307 · Security Note