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CVE-2012-4565

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

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 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

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

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 2012-12-04
Red Hat Enterprise Linux 6 (kernel) RHSA-2012:1580 2012-12-18

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 kernel Not affected

Acknowledgements

This issue was discovered by Rodrigo Freire of Red Hat.

Last Modified