|Bugzilla:||485163: CVE-2009-0778 kernel: rt_cache leak leads to lack of network connectivity|
The MITRE CVE dictionary describes this issue as:
The icmp_send function in net/ipv4/icmp.c in the Linux kernel before 2.6.25, when configured as a router with a REJECT route, does not properly manage the Protocol Independent Destination Cache (aka DST) in some situations involving transmission of an ICMP Host Unreachable message, which allows remote attackers to cause a denial of service (connectivity outage) by sending a large series of packets to many destination IP addresses within this REJECT route, related to an "rt_cache leak."
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, and Red Hat Enterprise MRG.
It was addressed in Red Hat Enterprise Linux 5 via: https://rhn.redhat.com/errata/RHSA-2009-0326.html .
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Red Hat security errata
|Red Hat Enterprise Linux EUS (v. 5.2 server) (kernel)||RHSA-2010:0079||February 02, 2010|
|Red Hat Enterprise Linux version 5 (kernel)||RHSA-2009:0326||April 01, 2009|
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.