Vulnerability in hamradio package: defer ax25 kfree after unregister_netdev
Summary
GSD-2021-1002773: hamradio: defer ax25 kfree after unregister_netdev. Affects Kernel versions < b5b193d0c67180fefdc664650138e3b7959df615. 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
Background
The hamradio package is a component of the Linux Kernel ecosystem. It provides support for Amateur Radio AX.25 protocol in the kernel. The AX.25 protocol is used by amateur radio operators to establish communication over radio frequencies. The package allows users to configure and utilize AX.25 network interfaces on their systems.
Vulnerability Detail
The vulnerability in the hamradio package involves a failure to properly handle memory deallocation. Specifically, the ax25 module does not defer the kfree operation after unregistering the network device. This can lead to a use-after-free vulnerability, where an attacker may be able to exploit the freed memory and execute arbitrary code or cause a denial of service. The impact and attack plausibility of this vulnerability have not been proven, but it is important to address it to ensure the security and stability of the system.
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.
Conclusion
The hamradio package in the Linux Kernel is vulnerable to a use-after-free issue related to memory deallocation. To mitigate this vulnerability, it is recommended to update the kernel to version v4.4.297 or later. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The hamradio package is a component of the Linux Kernel ecosystem that provides support for Amateur Radio AX.25 protocol.
The impact of this vulnerability is not proven, but it could potentially lead to a use-after-free vulnerability, allowing an attacker to execute arbitrary code or cause a denial of service.
To fix this vulnerability, update the Linux Kernel to version v4.4.297 or later.
No specific workaround has been mentioned for this vulnerability.
For more details, refer to the vulnerability report at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002773.json
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
