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CVE-2019-20428

24
FAUCET Score

CVE-2019-20428 is an out-of-bounds read vulnerability affecting the Lustre file system before version 2.12.3, specifically within the ptlrpc module. This flaw arises from insufficient validation of client-sent packet fields, leading to a system panic when the ldl_request_cancel function mishandles a large lock_count parameter. With a CVSS score of 7.5 (HIGH), this vulnerability can be exploited remotely without authentication and results in a denial of service. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.12.3CPE matchmatch criteria
cpe:2.3:a:lustre:lustre:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.82%
Probability of exploitation in next 30 days
EPSS Percentile
76.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0182 is in the 60th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lustre.org
ProductVendor Advisory
jira.whamcloud.com / browse/LU-12603
Third Party Advisory
review.whamcloud.com
Third Party Advisory
wiki.lustre.org / Lustre_2.12.3_Changelog
Release NotesVendor Advisory