CVE-2019-20426

Public Exploit

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.66%
Vendor Advisory lustre.org Vendor Advisory lustre.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://wiki.lustre.org/Lustre_2.12.3_Changelog release notes vendor advisory
http://lustre.org/ product vendor advisory
https://jira.whamcloud.com/browse/LU-12614 third party advisory exploit
https://review.whamcloud.com/#/c/36107/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-20426?
CVE-2019-20426 has been scored as a high severity vulnerability.
How to fix CVE-2019-20426?
To fix CVE-2019-20426, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-20426 being actively exploited in the wild?
It is possible that CVE-2019-20426 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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