What is CVE-2009-2698?

CVE-2009-2698 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476). CVE-2009-2698 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-2698?

CVE-2009-2698 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2009-2698?

No patch is currently available for CVE-2009-2698. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2009-2698 actively exploited?

CVE-2009-2698 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2009-2698

High

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.

Package Linux Kernel

Published 2009-08-27

Last modified 2026-04-23

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-476

CVE-2009-2698 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2009-2698 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00008.html

Mailing List Third Party Advisory
Red Hat
http://rhn.redhat.com/errata/RHSA-2009-1222.html

Third Party Advisory
Red Hat
http://rhn.redhat.com/errata/RHSA-2009-1223.html

Third Party Advisory
Secunia
http://secunia.com/advisories/23073

Broken Link Vendor Advisory
Secunia
http://secunia.com/advisories/36430

Broken Link Vendor Advisory
Secunia
http://secunia.com/advisories/36510

Broken Link Vendor Advisory
Secunia
http://secunia.com/advisories/37105

Broken Link Vendor Advisory
Secunia
http://secunia.com/advisories/37298

Broken Link Vendor Advisory
Secunia
http://secunia.com/advisories/37471

Broken Link Vendor Advisory
Support
http://support.avaya.com/css/P8/documents/100067254

Third Party Advisory
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19

Broken Link Vendor Advisory
Mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051

Broken Link Third Party Advisory
Openwall
http://www.openwall.com/lists/oss-security/2009/08/25/1

Mailing List
Red Hat
http://www.redhat.com/support/errata/RHSA-2009-1233.html

Broken Link Third Party Advisory
Securityfocus
http://www.securityfocus.com/archive/1/507985/100/0/threaded

Broken Link Third Party Advisory VDB Entry
Securityfocus
http://www.securityfocus.com/archive/1/512019/100/0/threaded

Broken Link Third Party Advisory VDB Entry
Securitytracker
http://www.securitytracker.com/id?1022761

Broken Link Third Party Advisory VDB Entry
Ubuntu Security
http://www.ubuntu.com/usn/USN-852-1

Third Party Advisory
Vmware
http://www.vmware.com/security/advisories/VMSA-2009-0016.html

Third Party Advisory
Vupen
http://www.vupen.com/english/advisories/2009/3316

Permissions Required
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=518034

Issue Tracking Third Party Advisory
Oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11514

Broken Link Third Party Advisory
Oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8557

Broken Link Third Party Advisory
Oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9142

Broken Link Third Party Advisory
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1e0c14f49d6b393179f423abbac47f85618d3d46
Patch
Kernel patch commit
http://www.securityfocus.com/bid/36108
Patch

Details

CVE ID CVE-2009-2698

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2009-08-27

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-2698?

CVE-2009-2698 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . CVE-2009-2698 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-2698?

CVE-2009-2698 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2009-2698?

No patch is currently available for CVE-2009-2698. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2009-2698 actively exploited?

No — CVE-2009-2698 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. View CWE-476 on MITRE CWE →