What’s Vulnerable › Vulnerabilities

CVE-2019-20427

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-01-27 · updated 2026-06-17
• Weakness: CWE-120

Description

In the Lustre file system before 2.12.3, the ptlrpc module has a buffer overflow and panic, and possibly remote code execution, due to the lack of validation for specific fields of packets sent by a client. Interaction between req_capsule_get_size and tgt_brw_write leads to a tgt_shortio2pages integer signedness error.

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-12600
• https://review.whamcloud.com/#/c/35867/
• http://lustre.org/
• http://wiki.lustre.org/Lustre_2.12.3_Changelog
• https://jira.whamcloud.com/browse/LU-12600
• https://review.whamcloud.com/#/c/35867/

Get alerted when CVE-2019-20427 or the next vulnerability affects your stack