Concurrent Modification Vulnerability in Linux Kernel - CVE-2022-49576
Summary
CVE-2022-49576: In the Linux kernel, the following vulnerability has been resolved: ipv4: Fix data-races around sysctl_fib_multipath_hash_fields. Affects linux versions < 5.18.16-1. Fixed in 5.18.16-1. How to fix ↓
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.
No signup required · Results in about 60 seconds
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
Background
The Linux kernel is the core component of many operating systems, responsible for managing hardware resources and providing essential services to applications. It is known for its stability, performance, and flexibility, making it a popular choice for servers, desktops, and embedded systems. However, like any complex software, it is susceptible to vulnerabilities that can compromise system integrity and security. CVE-2022-49576 specifically addresses a data race condition in the handling of the sysctl_fib_multipath_hash_fields parameter, which can lead to unpredictable behavior.
Vulnerability Detail
CVE-2022-49576 is a vulnerability in the Linux kernel that arises from concurrent modifications to the sysctl_fib_multipath_hash_fields parameter. When this parameter is read, it may be altered simultaneously by another process, leading to inconsistent data being returned. This vulnerability can result in system instability and potential security risks, as it may allow attackers to exploit the race condition to manipulate routing behavior or access sensitive information.
How To Fix
Minimum fixed version
5.18.16-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds provided for this vulnerability. It is advisable to apply the patch as soon as it is available to mitigate the risk.
Conclusion
CVE-2022-49576 is a significant vulnerability in the Linux kernel that can lead to data inconsistency and potential security risks due to concurrent modifications. It is essential to update to the patched version to ensure system stability and security. Regular monitoring and prompt updates are crucial in maintaining a secure environment.
See every vulnerability recorded for linux →
FAQ
CVE-2022-49576 is a vulnerability in the Linux kernel that involves a data race condition in the sysctl_fib_multipath_hash_fields parameter.
This vulnerability can lead to inconsistent data being returned, potentially causing system instability and security risks.
Yes, the patched version for Debian 12 and 13 is 5.18.16-1. It is recommended to update your Linux package to this version.
While there are no specific workarounds, it is crucial to monitor your system for any unusual behavior and apply the patch as soon as possible.
You can use Vulert, which allows you to monitor and alert in real-time for open-source vulnerabilities. Visit Vulert Scanner to check if your application is affected without requiring any installation.
Related vulnerabilities
Recent vulnerabilities recorded for linux.
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
