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."
Metrics
AV:N/AC:M/Au:N/C:N/I:N/A:CAffected software
No affected versions have been published.
Timeline
- Published
- Mar 12, 2009
- Last modified
- Jun 16, 2026
- NVD status
- Modified