Vulnerability in Kernel: iavf: free q_vectors before queues in iavf_disable_vf
Summary
GSD-2021-1002286: iavf: free q_vectors before queues in iavf_disable_vf. Affects Kernel versions >= 65c7006f234c9ede887d468f595f259a5c5cc552, < 78638b47132244e3934dc5dc79f6372d5ce8e98c. 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 Kernel is a critical component of the Linux operating system that provides core functionality and interfaces with hardware devices. It manages system resources, facilitates communication between software and hardware, and enables the execution of user programs. The iavf module within the Kernel is responsible for handling network traffic for Intel Ethernet devices. It provides virtual function (VF) support for Intel Ethernet devices in virtualized environments. The vulnerability in question arises from a flaw in the iavf_disable_vf function, where q_vectors (queue vectors) are freed before the associated queues, leading to potential memory corruption or use-after-free vulnerabilities.
Vulnerability Detail
The vulnerability occurs in the iavf_disable_vf function of the iavf module in the Kernel. When disabling a virtual function, the function incorrectly frees the q_vectors before the associated queues. This can result in memory corruption or use-after-free vulnerabilities, potentially leading to a variety of security issues. An attacker with local access to a vulnerable system could exploit this vulnerability to execute arbitrary code, escalate privileges, or cause a denial-of-service condition. The impact and attack plausibility of this vulnerability have not been proven, but it is essential to address it to ensure the security and stability of affected systems.
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. It is advised to apply the fix by updating the Kernel to the recommended version.
Conclusion
The vulnerability in the Kernel's iavf module poses a potential risk of memory corruption or use-after-free vulnerabilities. It is crucial to update the Linux Kernel to version v5.10.82 or later to mitigate this vulnerability. Failure to address this issue could result in arbitrary code execution, privilege escalation, or denial-of-service attacks. For further assistance or support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The impact of this vulnerability can vary depending on the specific system configuration and the presence of potential exploit vectors. In worst-case scenarios, an attacker could execute arbitrary code, escalate privileges, or cause a denial-of-service condition.
No, this vulnerability requires local access to a vulnerable system to exploit it.
There is no information available regarding exploitation of this vulnerability in real-world scenarios.
The recommended mitigation is to update the Linux Kernel to version v5.10.82 or later, which includes the fix for this vulnerability.
For more details about this vulnerability, including its technical aspects and the specific code changes that address it, refer to the source link provided in the vulnerability details section.
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.
