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."

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160
• http://openwall.com/lists/oss-security/2009/03/11/2Mailing List, Third Party Advisory
• http://secunia.com/advisories/33758Broken Link
• http://secunia.com/advisories/37471Broken Link
• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25Broken Link
• http://www.redhat.com/support/errata/RHSA-2009-0326.htmlBroken Link
• http://www.securityfocus.com/archive/1/507985/100/0/threadedThird Party Advisory, VDB Entry
• http://www.securityfocus.com/bid/34084Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id?1021958Third Party Advisory, VDB Entry
• http://www.vmware.com/security/advisories/VMSA-2009-0016.htmlThird Party Advisory
• http://www.vupen.com/english/advisories/2009/3316Broken Link
• https://bugzilla.redhat.com/show_bug.cgi?id=485163Exploit, Issue Tracking, Third Party Advisory
• https://exchange.xforce.ibmcloud.com/vulnerabilities/49199Third Party Advisory, VDB Entry
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10215Third Party Advisory
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7867Third Party Advisory
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160
• http://openwall.com/lists/oss-security/2009/03/11/2Mailing List, Third Party Advisory
• http://secunia.com/advisories/33758Broken Link
• http://secunia.com/advisories/37471Broken Link
• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25Broken Link
• http://www.redhat.com/support/errata/RHSA-2009-0326.htmlBroken Link
• http://www.securityfocus.com/archive/1/507985/100/0/threadedThird Party Advisory, VDB Entry
• http://www.securityfocus.com/bid/34084Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id?1021958Third Party Advisory, VDB Entry
• http://www.vmware.com/security/advisories/VMSA-2009-0016.htmlThird Party Advisory
• http://www.vupen.com/english/advisories/2009/3316Broken Link
• https://bugzilla.redhat.com/show_bug.cgi?id=485163Exploit, Issue Tracking, Third Party Advisory
• https://exchange.xforce.ibmcloud.com/vulnerabilities/49199Third Party Advisory, VDB Entry
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10215Third Party Advisory
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7867Third Party Advisory

Published

Mar 12, 2009

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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