What’s Vulnerable › Vulnerabilities

CVE-2019-20426

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-01-27 · updated 2026-06-17
• Weakness: CWE-787

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.

Affected products

• Lustre: before 2.12.3 — fixed in 2.12.3

How to fix

Upgrade to a fixed version: Lustre 2.12.3. Check the vendor advisory for mitigations.

References

• 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/
• 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/

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