Skip to content
CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-6507

Dnsmasq: dnsmasq: denial of service due to out-of-bounds write in dhcp bootreply processing

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
redhat

Description

A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` option. This can lead to memory corruption, causing the dnsmasq daemon to crash and resulting in a denial of service (DoS).

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

dnsmasq

Default version status: unaffected

  • 2.92 to < 2.93affected

Red Hat Red Hat Enterprise Linux 10

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 6

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 7

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: unaffected

Red Hat Red Hat OpenShift Container Platform 4

Default version status: unaffected

Red Hat Red Hat OpenShift Container Platform 4

Default version status: unaffected

References