Description
A denial of service vulnerability was discovered in nbdkit 1.12.7, 1.14.1 and 1.15.1. An attacker could connect to the nbdkit service and cause it to perform a large amount of work in initializing backend plugins, by simply opening a connection to the service. This vulnerability could cause resource consumption and degradation of service in nbdkit, depending on the plugins configured on the server-side.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | nbdkit | nbdkit 1.12.7, nbdkit 1.14.1, nbdkit 1.15.1 | — |
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 14 | nbdkit | 1.14.1-1 | — |
| Debian 13 | nbdkit | 1.14.1-1 | — |
| Debian 12 | nbdkit | 1.14.1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | nbdkit | No fix yet | — |
| Ubuntu 20.04 LTS | nbdkit | No fix yet | — |
| Ubuntu 16.04 LTS | nbdkit | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | nbdkit +6 | 1.8.0-3.el7 | RHSA-2020:1167 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | nbdkit +6 | 1.8.0-3.el7 | ELSA-2020-1167 |
Advisories 3
- RHSA-2020:1167 Red Hat Security Advisory: nbdkit security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- WID-SEC-2025-2548 Red Hat Enterprise Linux: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 2, 2025
- ELSA-2020-1167 Low: nbdkit security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 6, 2020