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Vulnerability record · CVE-2009-2698 · published 27 August 2009

CVE-2009-2698: Linux kernel null pointer dereference vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 7.1% · top 6.0% CWE-476 · NULL pointer dereference
7.8CVSS 3.1 base score, v2 7.2
7.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
12Affected product versions listed by NVD
52References, 2 tagged exploit
16 Jun 2026Last modified by NVD

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.

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

Affected products

12 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1e0c14f49d6b393179f423abbac47f85618d3d46 Broken Link
http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00008.html Mailing ListThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2009-1222.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2009-1223.html Third Party Advisory
http://secunia.com/advisories/23073 Broken LinkVendor Advisory
http://secunia.com/advisories/36430 Broken LinkVendor Advisory
http://secunia.com/advisories/36510 Broken LinkVendor Advisory
http://secunia.com/advisories/37105 Broken LinkVendor Advisory
http://secunia.com/advisories/37298 Broken LinkVendor Advisory
http://secunia.com/advisories/37471 Broken LinkVendor Advisory
http://support.avaya.com/css/P8/documents/100067254 Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19 Broken LinkVendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051 Broken LinkThird Party Advisory
http://www.openwall.com/lists/oss-security/2009/08/25/1 Mailing List
http://www.redhat.com/support/errata/RHSA-2009-1233.html Broken LinkThird Party Advisory
http://www.securityfocus.com/archive/1/507985/100/0/threaded Broken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/archive/1/512019/100/0/threaded Broken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/36108 Broken LinkExploitPatchThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id?1022761 Broken LinkThird Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-852-1 Third Party Advisory
http://www.vmware.com/security/advisories/VMSA-2009-0016.html Third Party Advisory
http://www.vupen.com/english/advisories/2009/3316 Permissions Required
https://bugzilla.redhat.com/show_bug.cgi?id=518034 Issue TrackingThird Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11514 Broken LinkThird Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8557 Broken LinkThird Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9142 Broken LinkThird Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1e0c14f49d6b393179f423abbac47f85618d3d46 Broken Link
http://lists.opensuse.org/opensuse-security-announce/2009-08/msg00008.html Mailing ListThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2009-1222.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2009-1223.html Third Party Advisory
http://secunia.com/advisories/23073 Broken LinkVendor Advisory
http://secunia.com/advisories/36430 Broken LinkVendor Advisory
http://secunia.com/advisories/36510 Broken LinkVendor Advisory
http://secunia.com/advisories/37105 Broken LinkVendor Advisory
http://secunia.com/advisories/37298 Broken LinkVendor Advisory
http://secunia.com/advisories/37471 Broken LinkVendor Advisory
http://support.avaya.com/css/P8/documents/100067254 Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19 Broken LinkVendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051 Broken LinkThird Party Advisory
http://www.openwall.com/lists/oss-security/2009/08/25/1 Mailing List

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Source: NIST National Vulnerability Database (record CVE-2009-2698), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.