Vulnerability in liquidio Package: Fix unintented sign extension of a left shift of a u16

Kernel Updated 02 Oct 2025

Summary

31/05/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1000454: liquidio: Fix unintented sign extension of a left shift of a u16. Affects Kernel versions >= 5bc67f587ba7eaa8dd3976bfeff8f2b60718c871, < 85ab024c69fa865a044c586aeb50e6459cd59c37. No fix is published. How to fix ↓

Free scan

Check if this vulnerability affects your application

Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.

Check my app free

No signup required · Results in about 60 seconds

Upload your dependency manifest or SBOM

Drag & drop your file here or Browse

Java Javascript PHP Python Go Rust Ruby Dart C/C++ Elixir CycloneDX SPDX

Upload a supported dependency manifest or SBOM. No installation or source-code access required.

See supported files and SBOM formats

SBOM sbom.json · bom.json · bom.xml · *.spdx.json · *.cdx.json · *.cdx.xml

Java pom.xml · gradle.lockfile · buildscript-gradle.lockfile

Javascript package-lock.json · yarn.lock · pnpm-lock.yaml

PHP composer.lock

Python poetry.lock · requirements.txt · Pipfile.lock

Go go.mod

Rust Cargo.lock

Ruby Gemfile.lock

Dart pubspec.lock

C/C++ conan.lock

Elixir mix.lock

Enter your work email to receive your report link.

Verify your email to view the full report and start 30 days of continuous monitoring. No credit card required.

Background

The liquidio package is a component of the Linux Kernel, which is responsible for managing network interfaces. It provides support for the Cavium LiquidIO Intelligent Server Adapter, enabling high-performance packet processing. The vulnerability in question arises from an unintended sign extension of a left shift operation on a 16-bit unsigned integer (u16).

Vulnerability Detail

The vulnerability occurs due to a coding error in the liquidio package. Specifically, a left shift operation on a u16 variable results in an unintended sign extension, which can lead to unexpected behavior and potential security issues. Although the impact and attack plausibility have not been proven, this vulnerability has the potential to be exploited by malicious actors. The vulnerability was introduced in version v4.9 of the Linux Kernel and has been fixed in version v4.19.191.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.19.191 or later. This update includes the necessary commit (85ab024c69fa865a044c586aeb50e6459cd59c37) to address the sign extension issue. Updating the Kernel will ensure that the liquidio package is patched and secure.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Workaround

There is no specific workaround mentioned for this vulnerability. The recommended approach is to update the Linux Kernel to the fixed version.

Conclusion

In conclusion, the liquidio package in the Linux Kernel is vulnerable to an unintended sign extension issue. To mitigate this vulnerability, it is crucial to update the Kernel to version v4.19.191 or later. This update includes the necessary fix for the sign extension problem. For further support and assistance in vulnerability remediation, you can reach out to DevNack.com.

See every vulnerability recorded for Kernel →