CVE-2026-63298

LXD arbitrary lxc.conf directive injection via NVIDIA instance configuration

Published: Aug 12, 2026Updated: Sep 11, 2026 Sources: CVE List NVDCWE-78

9.9CRITICAL

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:CScope

Changed

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-78

Affected Products

Canonical

commercial·GBaka canonical ltd.

LXDOn-prem

Operating Systems / linux-distro

and 1 more affected products View all →

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Execution

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References

https://github.com/canonical/lxd/security/advisories/GHSA-vfh7-q59q-54v2

github.com

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