# CVE-2022-50775: linux: In the Linux kernel, the following vulnerability has been resolved:  RDMA/hns: Fix refcount leak in hns_roce_mmap  rd...

CVE-2022-50775 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50775, released December 24, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-50775
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 24, 2025

## 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 <xuhaoyue1@hisilicon.com>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.20-1 | [DEBIAN-CVE-2022-50775](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50775.md) | Dec 24, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.20-1 | [DEBIAN-CVE-2022-50775](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50775.md) | Dec 24, 2025 |
| Linux | linux Debian 14 | 6.1.20-1 | [DEBIAN-CVE-2022-50775](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50775.md) | Dec 24, 2025 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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