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Vulnerability DatabaseCVE-2022-50234
CVE-2022-50234:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2022-50234 is a vulnerability in the Linux kernel related to io_uring/af_unix file handling, discovered and disclosed in September 2025. The vulnerability affects various Linux distributions including Ubuntu 22.04 LTS and its derivatives (NVD, Ubuntu).
Technical details
The vulnerability involves the handling of registered files in io_uring's unix_gc() functionality. Instead of putting io_uring's registered files in unix_gc(), they need to be handled by io_uring itself. The issue relates to cycle detection where io_uring registered files are considered but not actually put down. Since io_uring cannot register other ring instances, this removes all refs to the ring file, triggering the release path and cleanup with io_ring_ctx_free() (NVD).
Impact
The vulnerability affects multiple Linux distributions and their kernel packages, particularly impacting Ubuntu 22.04 LTS and various cloud-specific kernel variants including linux-aws, linux-azure, and linux-gcp (Ubuntu).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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