CVE-2009-0778

Linux Kernel < 2.6.25 - Denial of Service via ICMP Host Unreachable Message Handling

Title source: llm
STIX 2.1

Description

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."

References (15)

Core 15
Core References
Third Party Advisory x_refsource_confirm
http://www.vmware.com/security/advisories/VMSA-2009-0016.html
Broken Link vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2009-0326.html
Broken Link third-party-advisory x_refsource_secunia
http://secunia.com/advisories/37471
Broken Link third-party-advisory x_refsource_secunia
http://secunia.com/advisories/33758
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/507985/100/0/threaded
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://openwall.com/lists/oss-security/2009/03/11/2
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1021958
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/49199
Exploit, Issue Tracking, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=485163
Broken Link vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2009/3316
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/34084

Scores

EPSS 0.0148
EPSS Percentile 81.2%

Details

Status published
Products (11)
linux/linux_kernel 2.6.0 (12 CPE variants)
linux/linux_kernel 2.6.1 (4 CPE variants)
linux/linux_kernel 2.6.2 (4 CPE variants)
linux/linux_kernel 2.6.3 (5 CPE variants)
linux/linux_kernel 2.6.4 (4 CPE variants)
linux/linux_kernel 2.6.5 (4 CPE variants)
linux/linux_kernel 2.6.6 (4 CPE variants)
linux/linux_kernel 2.6.7 (4 CPE variants)
linux/linux_kernel 2.6.8 (5 CPE variants)
linux/linux_kernel 2.6.8.1
... and 1 more
Published Mar 12, 2009
Tracked Since Feb 18, 2026