CVE-2019-20431

Name: CVE-2019-20431
Creator: NVD / NIST
Published: 2020-01-27T05:15:12.483+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.92%

Last modified Jun 17, 2026

CVE-2019-20431 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In the Lustre file system before 2.12.3, the ptlrpc module has an osd_map_remote_to_local out-of-bounds access and panic due to the lack of validation for specific fields of packets sent by a client. osd_bufs_get in the osd_ldiskfs module does not validate a certain length value.. EPSS estimates a 1.92% chance of exploitation in the next 30 days.

Description

In the Lustre file system before 2.12.3, the ptlrpc module has an osd_map_remote_to_local out-of-bounds access and panic due to the lack of validation for specific fields of packets sent by a client. osd_bufs_get in the osd_ldiskfs module does not validate a certain length value.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.92%

77.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Lustre	Lustre	< 2.12.3

References

http://lustre.org/Product, Vendor Advisory
http://wiki.lustre.org/Lustre_2.12.3_ChangelogRelease Notes, Vendor Advisory
https://jira.whamcloud.com/browse/LU-12612Exploit, Third Party Advisory
https://review.whamcloud.com/#/c/36273/Third Party Advisory
http://lustre.org/Product, Vendor Advisory
http://wiki.lustre.org/Lustre_2.12.3_ChangelogRelease Notes, Vendor Advisory
https://jira.whamcloud.com/browse/LU-12612Exploit, Third Party Advisory
https://review.whamcloud.com/#/c/36273/Third Party Advisory

Timeline

Published: Jan 27, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20431?

How severe is CVE-2019-20431?

CVE-2019-20431 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.92% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20431?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-20431?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST