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    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."

    Published:Mar 26, 2008
    Last Modified:Apr 23, 2026
    EPS:Mar 12, 2009
    EPSS Score:0.01482
    CVSS Score:7.1

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Microsoft
    Product
    Windows
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Vmware
    Product
    Esx
    Vendor
    Vmware
    Product
    Server
    Vendor
    Vmware
    Product
    Vcenter
    Vendor
    Vmware
    Product
    Virtualcenter
    Vendor
    Vmware
    Product
    Vma

    Exploits

    https://bugzilla.redhat.com/show_bug.cgi?id=485163https://bugzilla.redhat.com/show_bug.cgi?id=485163

    Related CVEs

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    CVE-2026-80923 — In the Linux kernel, the following vulnerability has been resolved: xhci: dbgtty: Fix unregister on tty_regis…
    CVE-2026-80922 — In the Linux kernel, the following vulnerability has been resolved: crypto: qcom-rng - Allow zero as a random…
    CVE-2026-80921 (CVSS 8.8) — In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: zero stale crypto bits …
    CVE-2026-80920 — In the Linux kernel, the following vulnerability has been resolved: io_uring: defer eventfd signaling when qu…
    CVE-2026-80919 — In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix recursive ww_mutex acquir…
    CVE-2026-80918 — In the Linux kernel, the following vulnerability has been resolved: HID: core: fix number/pointer type confus…
    CVE-2026-80917 — In the Linux kernel, the following vulnerability has been resolved: PCI: host-generic: Fix NULL pointer deref…
    CVE-2026-80916 — In the Linux kernel, the following vulnerability has been resolved: kcov: fix data corruption and race condit…

    References

    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160
    http://openwall.com/lists/oss-security/2009/03/11/2
    http://secunia.com/advisories/33758
    http://secunia.com/advisories/37471
    http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25
    http://www.redhat.com/support/errata/RHSA-2009-0326.html
    http://www.securityfocus.com/archive/1/507985/100/0/threaded
    http://www.securityfocus.com/bid/34084
    http://www.securitytracker.com/id?1021958
    http://www.vmware.com/security/advisories/VMSA-2009-0016.html
    http://www.vupen.com/english/advisories/2009/3316
    https://bugzilla.redhat.com/show_bug.cgi?id=485163
    https://exchange.xforce.ibmcloud.com/vulnerabilities/49199
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10215
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7867
    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160
    http://openwall.com/lists/oss-security/2009/03/11/2
    http://secunia.com/advisories/33758
    http://secunia.com/advisories/37471
    http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25
    http://www.redhat.com/support/errata/RHSA-2009-0326.html
    http://www.securityfocus.com/archive/1/507985/100/0/threaded
    http://www.securityfocus.com/bid/34084
    http://www.securitytracker.com/id?1021958
    http://www.vmware.com/security/advisories/VMSA-2009-0016.html
    http://www.vupen.com/english/advisories/2009/3316
    https://bugzilla.redhat.com/show_bug.cgi?id=485163
    https://exchange.xforce.ibmcloud.com/vulnerabilities/49199
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10215
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7867

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High