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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Canonical | LXD | 5.0.0 – < 5.0.8, 5.21.0 – < 5.21.6, 4.0.0 – < 4.0.12 | 5.0.8 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | lxd | No fix yet | — |
| Debian 12 | lxd | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | lxd | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | lxd | No fix yet | — |
| Ubuntu Pro 16.04 LTS | lxd | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | lxd | 5.21.6-bp160.1.1 | openSUSE-SU-2026:21788-1 |
Advisories 1
- openSUSE-SU-2026:21788-1 Security update for lxd SUSE / openSUSE Security Updates · Sep 9, 2026
References
- https://github.com/canonical/lxd/security/advisories/GHSA-vfh7-q59q-54v2 vdb-entry vendor-advisory