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…

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."

Scores

EPSS (exploitation in 30 days)

4.6% · top 8.3% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (15)

• RHSA-2009:0326 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 37471 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.vmware.com/security/advisories/VMSA-2009-0016.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 33758 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• oval:org.mitre.oval:def:10215 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• 20091120 VMSA-2009-0016 VMware vCenter and ESX update release and vMA patch release address multiple security issue in third party components (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• oval:org.mitre.oval:def:7867 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25 (opens in a new tab)x_refsource_CONFIRMx_transferred
• [oss-security] 20090311 CVE-2009-0778 kernel: rt_cache leak (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• 1021958 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• linux-kernel-rtcache-dos(49199) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• https://bugzilla.redhat.com/show_bug.cgi?id=485163 (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2009-3316 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 34084 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2009-0778](https://trackcve.app/badge/CVE-2009-0778.svg)](https://trackcve.app/cve/CVE-2009-0778)

Record last updated 7 Aug 2024, 04:48 UTC.