mld: Fix Panic in mld_newpack() - Kernel
Summary
GSD-2021-1000619: mld: fix panic in mld_newpack(). Affects Kernel versions >= 72e09ad107e78d69ff4d3b97a69f0aad2b77280f, < 37d697759958d111439080bab7e14d2b0e7b39f5. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages communication between hardware and software. It provides essential functions and services for the proper functioning of the system. The mld module in the Kernel is responsible for handling Multicast Listener Discovery (MLD) packets, which are used for managing multicast group memberships. This vulnerability in the mld_newpack() function can lead to a system panic, causing the system to crash and become unresponsive.
Vulnerability Detail
The vulnerability in the mld_newpack() function of the Kernel's mld module allows an attacker to trigger a panic condition, resulting in a denial-of-service (DoS) situation. By sending specially crafted MLD packets, an attacker can exploit this vulnerability to crash the system, potentially disrupting critical services and causing data loss. The vulnerability was introduced in version v2.6.35 of the Kernel and is fixed in version v5.4.124.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is necessary to update the Kernel to the fixed version.
Conclusion
The mld_newpack() vulnerability in the Kernel's mld module can lead to a system crash and denial-of-service (DoS) condition. It is crucial to update the Linux Kernel to version v5.4.124 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability can lead to a system crash and denial-of-service (DoS) condition, potentially disrupting critical services and causing data loss.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will analyze it for potential vulnerabilities.
Yes, a patch is available in version v5.4.124 of the Linux Kernel. It is recommended to update to this version or a later one to fix the vulnerability.
Yes, this vulnerability can be exploited remotely by sending specially crafted MLD packets to the target system.
There are no known instances of this vulnerability being exploited in the wild. However, it is important to apply the patch as soon as possible to mitigate the risk.
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