Use After Free Vulnerability in net: macb
Summary
GSD-2021-1001572: net: macb: fix use after free on rmmod. Affects Kernel versions < 46670fb832ee80943715df618632ca13c2e96f2b. No fix is published. 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 net: macb package is a component of the Linux Kernel, which is responsible for managing network interfaces. It provides support for the MACB Ethernet controller. The vulnerability identified in this package is a use after free issue that occurs when the package is unloaded (rmmod). This vulnerability can potentially be exploited by an attacker to execute arbitrary code or cause a denial of service.
Vulnerability Detail
The use after free vulnerability in net: macb arises when the package is unloaded, leading to a situation where a pointer is accessed after it has been freed. This can result in the execution of unintended code or a system crash. The vulnerability has been fixed in Linux Kernel version v4.19.209 through commit 46670fb832ee80943715df618632ca13c2e96f2b.
How To Fix
No fixed version is published for this vulnerability.
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 apply the fix by updating the Linux Kernel.
Conclusion
The use after free vulnerability in net: macb has been addressed in Linux Kernel version v4.19.209. It is crucial to update the Linux Kernel to ensure the security and stability of the system. For further support on vulnerability remediation, you can reach out to DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
net: macb is a component of the Linux Kernel that handles network interfaces, specifically providing support for the MACB Ethernet controller.
A use after free vulnerability occurs when a program continues to use a pointer after it has been freed. This can lead to unpredictable behavior and potential security issues.
Exploiting this vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by crashing the system.
To fix this vulnerability, update the Linux Kernel to version v4.19.209 or later. Alternatively, wait for your Linux distribution to provide an updated package.
No specific workaround has been mentioned. It is recommended to apply the fix by updating the Linux Kernel.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
