Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2009-2698

NULL Pointer Dereference

Published: Aug 27, 2009 | Modified: Apr 09, 2025
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
7.2 IMPORTANT
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2009-2698
CWEhttps://cwe.mitre.org/data/definitions/476.html

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.

Weakness

The product dereferences a pointer that it expects to be valid but is NULL.

Affected Software

NameVendorStart VersionEnd Version
Linux_kernelLinux*2.6.19 (excluding)
Red Hat Enterprise Linux 3RedHatkernel-0:2.4.21-60.EL*
Red Hat Enterprise Linux 4RedHatkernel-0:2.6.9-89.0.9.EL*
Red Hat Enterprise Linux 4.7 Z StreamRedHatkernel-0:2.6.9-78.0.27.EL*
Red Hat Enterprise Linux 5RedHatkernel-0:2.6.18-128.7.1.el5*
Red Hat Enterprise Linux 5.2 Z StreamRedHatkernel-0:2.6.18-92.1.28.el5*
Linux-source-2.6.15Ubuntudapper*

Potential Mitigations

References

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