CVE-2022-50775
Unknown Unknown - Not Provided
Reference Count Leak in Linux Kernel RDMA hns_roce_mmap Component

Publication date: 2025-12-24

Last updated on: 2025-12-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix refcount leak in hns_roce_mmap rdma_user_mmap_entry_get_pgoff() takes the reference. Add missing rdma_user_mmap_entry_put() to release the reference. Acked-by Haoyue Xu <[email protected]>
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Meta Information
Published
2025-12-24
Last Modified
2025-12-24
Generated
2026-06-16
AI Q&A
2025-12-24
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50775
EUVD
EUVD-2022-55786
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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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 hns_roce driver. Specifically, the function rdma_user_mmap_entry_get_pgoff() takes a reference, but the corresponding release function rdma_user_mmap_entry_put() was missing, causing the reference count to not be properly decremented.

Impact Analysis

The reference count leak can lead to resource leaks in the kernel, potentially causing increased memory usage or instability in systems using the RDMA hns_roce driver. This could degrade system performance or lead to denial of service conditions.

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