CVE-2026-63298: An improper neutralization of special elements vulnerability in LXD's NVIDIA instance configuration handling allows an authenticated attacker to inject…

PriorityP267critical9.9CVSS 3.1

AVNACLPRLUINSCCHIHAH

EPSS

0.36%

28.8th percentile

An improper neutralization of special elements vulnerability in LXD's NVIDIA instance configuration handling allows an authenticated attacker to inject arbitrary configuration directives. By supplying newline characters within the 'nvidia.driver.capabilities' or 'nvidia.require.*' configuration values, an attacker can manipulate the generated lxc.conf file. This flaw enables the attacker to execute arbitrary code on the host system with the privileges of the LXD daemon.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
canonical	lxd	>= 4.0.0 < 4.0.12	4.0.12
canonical	lxd	>= 5.0.0 < 5.0.8	5.0.8
canonical	lxd	>= 5.21.0 < 5.21.6	5.21.6

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