CVE-2023-5871: Red Hat Enterprise Linux

Medium severity, CVSS 5.3. EPSS: 0.9% chance of exploitation in the next 30 days.

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

• Red Hat Enterprise Linux: version 9.0 only
• Red Hat Libnbd: from 1.17.4, before 1.18.2 (fixed in 1.18.2); version 1.19.1 only

Published 2023-11-27. Last modified 2026-06-17.