Linux Kernel up to 6.1.15/6.2.2 rdma_user_mmap_entry_get_pgoff reference count

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.1.15/6.2.2. This affects the function rdma_user_mmap_entry_get_pgoff. Performing a manipulation results in reference count. This vulnerability is cataloged as CVE-2022-50775. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.15/6.2.2. It has been classified as critical. This affects the function rdma_user_mmap_entry_get_pgoff. The manipulation with an unknown input leads to a reference count vulnerability. CWE is classifying the issue as CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. This is going to have an impact on availability. The summary by CVE is:

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]>

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-50775 since 12/24/2025. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 280061 (Linux Distros Unpatched Vulnerability : CVE-2022-50775), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.16 or 6.2.3 eliminates this vulnerability. Applying the patch fa87cf2e756efe809ee8683d4f282f4de962dab6/8abd2ff2256a2a99c11c7ecdcb5512429933620f/cf6a05c8494a8ae7fec8e5f1229b45ca5b4bcd30 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (280061) and CERT Bund (WID-SEC-2025-2929). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Reference count
CWE: CWE-911 / CWE-664
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 280061
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2022-50775

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.16/6.2.3
Patch: fa87cf2e756efe809ee8683d4f282f4de962dab6/8abd2ff2256a2a99c11c7ecdcb5512429933620f/cf6a05c8494a8ae7fec8e5f1229b45ca5b4bcd30

Timelineinfo

12/24/2025 Advisory disclosed
12/24/2025 +0 days CVE reserved
12/24/2025 +0 days VulDB entry created
04/22/2026 +119 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-50775 (🔒)
GCVE (CVE): GCVE-0-2022-50775
GCVE (VulDB): GCVE-100-338109
CERT Bund: WID-SEC-2025-2929 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 12/24/2025 15:09
Updated: 04/22/2026 10:23
Changes: 12/24/2025 15:09 (58), 12/25/2025 13:35 (1), 12/27/2025 00:36 (2), 12/30/2025 01:32 (7), 04/22/2026 10:23 (1)
Complete: 🔍
Cache ID: 216::103

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