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CVE Database

CVE-2012-3375

Impact: Moderate
Public: 2012-03-27
Bugzilla: 837502: CVE-2012-3375 kernel: epoll: can leak file descriptors when returning -ELOOP

Details

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2012-3375 from the MITRE CVE dictionary and NIST NVD.

Statement

This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6, since updates fixing CVE-2011-1083 contained a corrected patch that did not introduce this regression.

This has been addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2012-1061.html, and Red Hat Enterprise Linux Red Hat Enterprise MRG 2 via https://rhn.redhat.com/errata/RHSA-2012-1150.html

CVSS v2 metrics

Base Score: 4.9
Base Metrics: AV:L/AC:L/Au:N/C:N/I:N/A:C
Access Vector: Local
Access Complexity: Low
Authentication: None
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2012:1150 August 08, 2012
Red Hat Enterprise Linux version 5 (kernel) RHSA-2012:1061 July 10, 2012

External References

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.