Description
A flaw was found in libnbd, due to a malicious Network Block Device (NBD), a protocol for accessing Block Devices such as hard disks over a Network. This issue may allow a malicious NBD server to cause a Denial of Service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 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 14 | libnbd | 1.18.1-1 | — |
| Debian 13 | libnbd | 1.18.1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | libnbd | No fix yet | — |
| Ubuntu 22.04 LTS | libnbd | No fix yet | — |
| Ubuntu 20.04 LTS | libnbd | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | libnbd +6 | 1.18.1-3.el9 | RHSA-2024:2204 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | libnbd +6 | 1.18.1-3.el9 | ALSA-2024:2204 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libnbd | 1.18.1-2.1 | openSUSE-SU-2024:13422-1 |
| openSUSE Leap 15.5 | libnbd | 1.18.1-150300.8.18.1 | SUSE-SU-2023:4463-1 |
| openSUSE Leap 15.4 | libnbd | 1.18.1-150300.8.18.1 | SUSE-SU-2023:4463-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | libnbd +6 | 1.18.1-3.el9 | ELSA-2024-2204 |
Advisories 6
- ALSA-2024:2204 Moderate: libnbd security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:2204 Red Hat Security Advisory: libnbd security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- SUSE-SU-2023:4463-1 Security update for libnbd SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13422-1 libnbd-1.18.1-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-0995 Red Hat Enterprise Linux: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 17, 2025
- ELSA-2024-2204 Moderate: libnbd security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 2, 2024