HIGH

CVE-2009-2698

CVSS v3

7.8

HIGH

EPSS Score

7.1 %

exploit probability, as of 2026-10-18

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

CVE-2009-2698 Red Hat Product Security621 products fixed
kernel: udp socket NULL ptr dereference
RHSA-2009:1469 Red Hat Product Security64 products fixed
Red Hat Security Advisory: kernel security update
RHSA-2009:1457 Red Hat Product Security61 products fixed
Red Hat Security Advisory: kernel security update
RHSA-2009:1233 Red Hat Product Security142 products fixed
Red Hat Security Advisory: kernel security update
RHSA-2009:1223 Red Hat Product Security109 products fixed
Red Hat Security Advisory: kernel security update
RHSA-2009:1222 Red Hat Product Security88 products fixed
Red Hat Security Advisory: kernel security and bug fix update

Full record on 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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2009-08-24
Last Modified: 2026-04-23
Exploit-DB: EDB-9542 EDB-9574 EDB-9575

Frequently asked questions

What is CVE-2009-2698?

Is CVE-2009-2698 actively exploited?

Active exploitation of CVE-2009-2698 has not been confirmed. Its EPSS score was 7.1% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

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

CVE-2009-2698 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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