netlabel: Out-of-Bounds Memory Access in Linux Kernel
Summary
GSD-2022-1002320: netlabel: fix out-of-bounds memory accesses. Affects Kernel versions >= 446fda4f26822b2d42ab3396aafcedf38a9ff2b6, < e3713abc4248aa6bcc11173d754c418b02a62cbb. 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 Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for various Linux distributions. It provides essential functionality for managing system resources, device drivers, and security features. The netlabel subsystem within the Linux Kernel is responsible for implementing network labeling and access control. It assigns security labels to network packets and enforces policies based on these labels. However, a vulnerability has been discovered in the netlabel subsystem that allows for out-of-bounds memory accesses.
Vulnerability Detail
The netlabel vulnerability arises from improper memory access within the subsystem. An attacker could exploit this flaw to read or write data outside the boundaries of allocated memory, potentially leading to information disclosure, privilege escalation, or system crashes. The vulnerability was introduced in version v2.6.19 of the Linux Kernel and has been present until version v4.19.28. The impact and attack plausibility of this vulnerability have not been proven yet.
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 →
Conclusion
The netlabel vulnerability in the Linux Kernel's netlabel subsystem exposes the system to potential memory access issues. It is crucial to update the Linux Kernel to version v4.19.28 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The netlabel subsystem is responsible for network labeling and access control in the Linux Kernel. It assigns security labels to network packets and enforces policies based on these labels.
The netlabel vulnerability could lead to information disclosure, privilege escalation, or system crashes if exploited by an attacker.
You can use the Vulert Playground at Vulert Scanner to check if your Linux Kernel version is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will provide real-time alerts for open-source vulnerabilities.
No specific workaround has been mentioned for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
You can refer to the vulnerability details in the GSD database at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1002xxx/GSD-2022-1002320.json
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.
