CVE-2019-20426 Information

Description

In the Lustre file system before 2.12.3 the ptlrpc module has an out-of-bounds access and panic due to the lack of validation for specific fields of packets sent by a client. In the function ldlm_cancel_hpreq_check there is no lock_count bounds check.

CVSS Vector

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

Reference

http://lustre.org/ http://wiki.lustre.org/Lustre_2.12.3_Changelog https://jira.whamcloud.com/browse/LU-12614 https://review.whamcloud.com//c/36107/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5