CVE-2022-50874
Unknown Unknown - Not Provided
Reference Count Leak in Linux Kernel RDMA erdma_mmap Component

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Fix refcount leak in erdma_mmap rdma_user_mmap_entry_get() take reference, we should release it when not need anymore, add the missing rdma_user_mmap_entry_put() in the error path to fix it.
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Meta Information
Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-06-16
AI Q&A
2025-12-30
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50874
EUVD
EUVD-2022-55922
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a reference count leak in the Linux kernel's RDMA erdma_mmap component. Specifically, the function rdma_user_mmap_entry_get() takes a reference that should be released when no longer needed, but the code was missing a call to rdma_user_mmap_entry_put() in an error path, causing the reference count to leak.

Impact Analysis

The reference count leak could lead to resource leaks in the kernel, potentially causing increased memory usage or instability in systems using the RDMA erdma_mmap functionality.

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