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Servers and applications

CVE-2009-2698

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.

Severity
High 7.8
Published
27 Aug 2009
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
7.1% in the next 30 daysHigher than 94% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Null pointer dereference (CWE-476)
Attack
Needs local access · Needs a user account · No user action needed
Attacker can
Read data · Change data · Take it down
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Sources
NVD

Affected software

SoftwareAffected versions
VMware vCenter ServerServers and applications · cpe:a:vmware:vcenter_server
  • Version 4.0
VMware ESXiServers and applications · cpe:o:vmware:esxi
  • Version 4.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2009-2698
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2009-2698