CVE-2009-0778
The icmp_send function in net/ipv4/icmp.c in the Linux kernel before 2.6.25, when configured as a...
7.1 High
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."
Exploit likelihood
4.62%Up 0.8 points since Feb 4, 2022
What each source reports
NVD Score used
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."
- Record
CVE-2009-0778- CVSS 2.0
- 7.1 High
AV:N/AC:M/Au:N/C:N/I:N/A:C - Updated
- 2026-11-02
CVE List No score
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."
- Record
CVE-2009-0778- Updated
- 2026-11-02
EUVDEUVD-2009-0778 No score
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."
- Record
EUVD-2009-0778- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2327-m5w2-rg7f No score
The icmp_send function in net/ipv4/icmp.c in the Linux kernel before 2.6.25, when configured as a...
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."
- Record
GHSA-2327-m5w2-rg7f- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
kernelRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-PAERed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-PAE-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-PAE-develRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-debugRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-debug-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-debug-develRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-debuginfo-commonRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-develRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
Show 40 moreShow less
| Package | Affected | Fixed |
|---|---|---|
kernel-docRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-headersRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-xenRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-xen-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-xen-develRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernelRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-PAERed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-PAE-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-PAE-develRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-debugRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-debug-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-debug-develRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-debuginfo-commonRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-develRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-docRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-headersRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-kdumpRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-kdump-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-kdump-develRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-xenRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-xen-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernel-xen-develRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:2.6.18-128.1.6.el5 | 0:2.6.18-128.1.6.el5 |
kernelRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-PAERed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-PAE-debuginfoRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-PAE-develRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-debugRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-debug-debuginfoRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-debug-develRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-debuginfoRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-debuginfo-commonRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-develRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-docRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-kdumpRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-kdump-debuginfoRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-kdump-develRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-xenRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-xen-debuginfoRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
kernel-xen-develRed Hat:rhel_eus:5.2 From an advisory covering 9 CVEs |
before 0:2.6.18-92.1.35.el5 | 0:2.6.18-92.1.35.el5 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-0778 is a high vulnerability (CVSS 7.1) in Linux Kernel, published March 12, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.62%, the 91st percentile. No source names a fixed version.
References
redhat.com/support/errata/RHSA-2009-0326.html
secunia.com/advisories/37471
git.kernel.org?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160
vmware.com/security/advisories/VMSA-2009-0016.html
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10215
Show 108 moreShow less
securityfocus.com/archive/1/507985/100/0/threaded
kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25
openwall.com/lists/oss-security/2009/03/11/2
securitytracker.com/id?1021958
exchange.xforce.ibmcloud.com/vulnerabilities/49199
bugzilla.redhat.com/show_bug.cgi?id=485163
vupen.com/english/advisories/2009/3316
nvd.nist.gov/vuln/detail/CVE-2009-0778
access.redhat.com/errata/RHSA-2009:0326
github.com/advisories/GHSA-2327-m5w2-rg7f
security.access.redhat.com/data/csaf/v2/advisories/2009/rhsa-2009_0326.json
cve.org/CVERecord?id=CVE-2008-3528