Buffer Overflow and Panic in Lustre File System: Integer Signedness Error in target_handle_connect()

Buffer Overflow and Panic in Lustre File System: Integer Signedness Error in target_handle_connect()

CVE-2019-20423 · HIGH Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

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