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CVE PROGRAM SOURCE RECORD2.3 Low

CVE-2026-61477

Libvirt: libvirt: newline injection in network xml dns txt/srv fields allows dnsmasq config directive injection

Description

An injection vulnerability was found in libvirt's virtual network driver. The network XML parser does not strip newline characters from DNS TXT record value attributes and SRV record domain/target attributes. These values are written verbatim into the dnsmasq configuration file generated by the network driver, allowing a user with permission to define virtual networks to inject arbitrary dnsmasq configuration directives such as dhcp-script, leading to arbitrary command execution as root.

Affected products

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

Red Hat Red Hat Enterprise Linux 10

Default version status: affected

Red Hat Red Hat Enterprise Linux 6

Default version status: affected

Red Hat Red Hat Enterprise Linux 7

Default version status: affected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

Red Hat Red Hat Enterprise Linux for NVIDIA 26

Default version status: affected

References