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CVE Database

CVE-2012-4565

Impact: Moderate
Public: 2012-10-31
Bugzilla: 871848: CVE-2012-4565 kernel: net: divide by zero in tcp algorithm illinois

Details

The MITRE CVE dictionary describes this issue as:

The tcp_illinois_info function in net/ipv4/tcp_illinois.c in the Linux kernel before 3.4.19, when the net.ipv4.tcp_congestion_control illinois setting is enabled, allows local users to cause a denial of service (divide-by-zero error and OOPS) by reading TCP stats.

Find out more about CVE-2012-4565 from the MITRE CVE dictionary and NIST NVD.

Statement

This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 5.

This issue did affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 6.

This issue did affect the version of Linux kernel as shipped with Red Hat Enterprise MRG 2.

CVSS v2 metrics

Base Score: 4.7
Base Metrics: AV:L/AC:M/Au:N/C:N/I:N/A:C
Access Vector: Local
Access Complexity: Medium
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-2012:1491 December 04, 2012
Red Hat Enterprise Linux version 6 (kernel) RHSA-2012:1580 December 18, 2012

External References

Acknowledgements

This issue was discovered by Rodrigo Freire of Red Hat.

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.