CVE-2019-20423: Lustre

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

In the Lustre file system before 2.12.3, the ptlrpc module has a buffer overflow and panic due to the lack of validation for specific fields of packets sent by a client. The function target_handle_connect() mishandles a certain size value when a client connects to a server, because of an integer signedness error.

Affected products

• Lustre Lustre: before 2.12.3 (fixed in 2.12.3)

Published 2020-01-27. Last modified 2026-06-17.