CVE-2009-2698

Name: CVE-2009-2698
Creator: NVD / NIST
Published: 2009-08-27T17:30:00.233+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 7.18%

Last modified Jun 16, 2026

CVE-2009-2698 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The udp_sendmsg function in the UDP implementation in (1) net/ipv4/udp.c and (2) net/ipv6/udp.c in the Linux kernel before 2.6.19 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving the MSG_MORE flag and a UDP socket.. EPSS estimates a 7.18% chance of exploitation in the next 30 days.

Description

The udp_sendmsg function in the UDP implementation in (1) net/ipv4/udp.c and (2) net/ipv6/udp.c in the Linux kernel before 2.6.19 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving the MSG_MORE flag and a UDP socket.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

7.18%

93.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	< 2.6.19	—
Canonical	Ubuntu Linux	6.06	—
Canonical	Ubuntu Linux	8.04	—
Canonical	Ubuntu Linux	8.10	—
Canonical	Ubuntu Linux	9.04	—
Suse	Linux Enterprise Desktop	10	Sp2
Suse	Linux Enterprise Server	9	—
Suse	Linux Enterprise Server	10	Sp2
Fedoraproject	Fedora	10	—
Redhat	Enterprise Linux Desktop	4.0	—
Redhat	Enterprise Linux Desktop	5.0	—
Redhat	Enterprise Linux Eus	4.8	—
Redhat	Enterprise Linux Eus	5.3	—
Redhat	Enterprise Linux Server	4.0	—
Redhat	Enterprise Linux Server	5.0	—
Redhat	Enterprise Linux Server Aus	5.3	—
Redhat	Enterprise Linux Workstation	4.0	—
Redhat	Enterprise Linux Workstation	5.0	—
Vmware	Vcenter Server	4.0	—
Vmware	Esxi	4.0	—

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1e0c14f49d6b393179f423abbac47f85618d3d46Broken Link
http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00008.htmlMailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2009-1222.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2009-1223.htmlThird Party Advisory
http://secunia.com/advisories/23073Broken Link, Vendor Advisory
http://secunia.com/advisories/36430Broken Link, Vendor Advisory
http://secunia.com/advisories/36510Broken Link, Vendor Advisory
http://secunia.com/advisories/37105Broken Link, Vendor Advisory
http://secunia.com/advisories/37298Broken Link, Vendor Advisory
http://secunia.com/advisories/37471Broken Link, Vendor Advisory
http://support.avaya.com/css/P8/documents/100067254Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19Broken Link, Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051Broken Link, Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/08/25/1Mailing List
http://www.redhat.com/support/errata/RHSA-2009-1233.htmlBroken Link, Third Party Advisory
http://www.securityfocus.com/archive/1/507985/100/0/threadedBroken Link, Third Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/512019/100/0/threadedBroken Link, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/36108Broken Link, Exploit, Patch, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id?1022761Broken Link, Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-852-1Third Party Advisory
http://www.vmware.com/security/advisories/VMSA-2009-0016.htmlThird Party Advisory
http://www.vupen.com/english/advisories/2009/3316Permissions Required
https://bugzilla.redhat.com/show_bug.cgi?id=518034Issue Tracking, Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11514Broken Link, Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8557Broken Link, Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9142Broken Link, Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1e0c14f49d6b393179f423abbac47f85618d3d46Broken Link
http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00008.htmlMailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2009-1222.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2009-1223.htmlThird Party Advisory
http://secunia.com/advisories/23073Broken Link, Vendor Advisory
http://secunia.com/advisories/36430Broken Link, Vendor Advisory
http://secunia.com/advisories/36510Broken Link, Vendor Advisory
http://secunia.com/advisories/37105Broken Link, Vendor Advisory
http://secunia.com/advisories/37298Broken Link, Vendor Advisory
http://secunia.com/advisories/37471Broken Link, Vendor Advisory
http://support.avaya.com/css/P8/documents/100067254Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19Broken Link, Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051Broken Link, Third Party Advisory
http://www.openwall.com/lists/oss-security/2009/08/25/1Mailing List
http://www.redhat.com/support/errata/RHSA-2009-1233.htmlBroken Link, Third Party Advisory
http://www.securityfocus.com/archive/1/507985/100/0/threadedBroken Link, Third Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/512019/100/0/threadedBroken Link, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/36108Broken Link, Exploit, Patch, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id?1022761Broken Link, Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-852-1Third Party Advisory
http://www.vmware.com/security/advisories/VMSA-2009-0016.htmlThird Party Advisory
http://www.vupen.com/english/advisories/2009/3316Permissions Required
https://bugzilla.redhat.com/show_bug.cgi?id=518034Issue Tracking, Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11514Broken Link, Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8557Broken Link, Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9142Broken Link, Third Party Advisory

Timeline

Published: Aug 27, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-2698?

How severe is CVE-2009-2698?

CVE-2009-2698 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 7.18% probability of exploitation in the next 30 days.

How do I fix CVE-2009-2698?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-2698?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST