CVE-2009-4272

Impact:
Important
Public Date:
2010-01-19
CWE:
CWE-662->CWE-362->CWE-672->CWE-476
Bugzilla:
545411: CVE-2009-4272 kernel: emergency route cache flushing leads to node deadlock

The MITRE CVE dictionary describes this issue as:

A certain Red Hat patch for net/ipv4/route.c in the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 allows remote attackers to cause a denial of service (deadlock) via crafted packets that force collisions in the IPv4 routing hash table, and trigger a routing "emergency" in which a hash chain is too long. NOTE: this is related to an issue in the Linux kernel before 2.6.31, when the kernel routing cache is disabled, involving an uninitialized pointer and a panic.

Find out more about CVE-2009-4272 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 3, 4 and Red Hat Enterprise MRG. Shipped kernels do not include upstream commits c6153b5b and 1080d709 that introduced the problem.

It was addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2010-0046.html

CVSS v2 metrics

Base Score 7.8
Base Metrics AV:N/AC:L/Au:N/C:N/I:N/A:C
Access Vector Network
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
Red Hat Enterprise Virtualization Hypervisor 5 (rhev-hypervisor) RHSA-2010:0095 2010-02-09
Red Hat Enterprise Linux 5 (kernel) RHSA-2010:0046 2010-01-19

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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