CVE-2019-20426 Memory corruption in n/a

High 7.5 Published 27 Jan 2020 Updated 5 Aug 2024

An out-of-bounds access in the Lustre file system kernel module allows remote attackers to cause a system panic via crafted packets.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-20426?

CVE-2019-20426 is a high-severity memory corruption vulnerability in n/a, published on 27 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-787

Which versions are affected by CVE-2019-20426?

It affects 1 product.

Products include Lustre Lustre.

How do I fix CVE-2019-20426?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-20426 being exploited?

There is no known exploitation of CVE-2019-20426 in the wild and no public exploit code.

Sources

Also known as GHSA-9fwv-5489-f4p3, ROOT-OS-UBUNTU-2204-CVE-2019-20426, ROOT-OS-UBUNTU-2404-CVE-2019-20426, UBUNTU-CVE-2019-20426.