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."
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2009-03-12T15:00:00

Updated: 2024-08-07T04:48:52.114Z

Reserved: 2009-03-03T00:00:00

Link: CVE-2009-0778

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2009-03-12T15:20:49.780

Modified: 2023-02-13T02:19:41.630

Link: CVE-2009-0778

cve-icon Redhat

Severity : Important

Publid Date: 2008-03-26T00:00:00Z

Links: CVE-2009-0778 - Bugzilla