Bug 262303 (CVE-2009-0778)

Summary:	Kernel: Dst entry leak in icmp_send host re-lookup code (v2). (CVE-2009-0778)
Product:	Gentoo Security	Reporter:	Stefan Behte (RETIRED) <craig>
Component:	Kernel	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	normal	CC:	kernel
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160
Whiteboard:	[ linux <2.6.25 ]
Package list:		Runtime testing required:	---

Description Stefan Behte (RETIRED) gentoo-dev

2009-03-12 20:56:17 UTC

CVE-2009-0778 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-0778):
  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."

Comment 1 kfm 2009-07-21 03:39:11 UTC

hardened-kernel unaffected at present time. Removing alias.