National Cyber Awareness System
Vulnerability Summary for CVE-2012-3375
Original release date:10/03/2012
Last revised:03/23/2013
Source:
US-CERT/NIST
Overview
The epoll_ctl system call in fs/eventpoll.c in the Linux kernel before 3.2.24 does not properly handle ELOOP errors in EPOLL_CTL_ADD operations, which allows local users to cause a denial of service (file-descriptor consumption and system crash) via a crafted application that attempts to create a circular epoll dependency. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1083.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.9
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows disruption of serviceUnknown
References to Advisories, Solutions, and Tools
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External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=13d518074a952d33d47c428419693f63389547e9
Type: Patch Information
External Source: CONFIRM
Name: https://github.com/torvalds/linux/commit/13d518074a952d33d47c428419693f63389547e9
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=837502
External Source: SECTRACK
Name: 1027237
External Source: MLIST
Name: [oss-security] 20120704 Re: CVE Request -- kernel: epoll: can leak file descriptors when returning -ELOOP
External Source: CONFIRM
Name: http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.24
External Source: UBUNTU
Name: USN-1529-1
