Cloud Vulnerability DB
A community-led vulnerabilities database
Vulnerability DatabaseCVE-2022-50522
CVE-2022-50522:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2022-50522 is a vulnerability in the Linux kernel that was disclosed on October 7, 2025. The issue affects the MCB (MicroChannel Bus) subsystem, specifically in the error handling functionality of the chameleon_parse_gdd() function (NVD, Ubuntu).
Technical details
The vulnerability occurs when mcb_device_register() returns an error in chameleon_parse_gdd(), causing the refcount of bus and device name to be leaked. This issue requires fixing by calling put_device() to properly release the reference, allowing them to be released in mcb_release_dev() and kobject_cleanup() (RedHat).
Impact
The vulnerability results in a memory leak condition in the Linux kernel's MCB subsystem, which could potentially lead to resource exhaustion over time (NVD).
Mitigation and workarounds
Multiple Linux distributions have released patches to address this vulnerability. Ubuntu has fixed this issue across various kernel versions, including linux-hwe 5.15.0-69.76~20.04.1 for 20.04 LTS and linux-azure 5.15.0-1035.42 for 22.04 LTS (Ubuntu).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
Free Vulnerability Assessment
Benchmark your Cloud Security Posture
Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.
Additional Wiz resources
Get a personalized demo
Ready to see Wiz in action?
"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management