CVE-2021-20286: Red Hat Enterprise Linux

Low severity, CVSS 2.7. EPSS: 1.1% chance of exploitation in the next 30 days.

A flaw was found in libnbd 1.7.3. An assertion failure in nbd_unlocked_opt_go in ilb/opt.c may lead to denial of service.

Affected products

• Red Hat Enterprise Linux: version 8.3.0 only
• Red Hat Libnbd: before 1.7.3 (fixed in 1.7.3)

Published 2021-03-15. Last modified 2026-06-17.