---
id: CVE-2026-45922
title: 'RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler

  The UVERBS_HANDLER(MLX5_IB_METHOD_GET_DATA_DIRECT_SYSFS_PATH) function
  allocates memory for the device…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= ec7ad6530909983c8736c80af46e3529ce7bab55 <
    ee998cdbff6680891b0efd9d6ce53a388e5342c3
  - >-
    Linux >= ec7ad6530909983c8736c80af46e3529ce7bab55 <
    b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2
  - >-
    Linux >= ec7ad6530909983c8736c80af46e3529ce7bab55 <
    b3a10eca24fcfe913c0875e620f19596001bd6dc
  - >-
    Linux >= ec7ad6530909983c8736c80af46e3529ce7bab55 <
    9b9d253908478f504297ac283c514e5953ddafa6
  - Linux 6.12
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:02:02.283949Z'
published: '2026-05-27'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:03:15.136Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-45922'
references:
  - url: 'https://git.kernel.org/stable/c/ee998cdbff6680891b0efd9d6ce53a388e5342c3'
  - url: 'https://git.kernel.org/stable/c/b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2'
  - url: 'https://git.kernel.org/stable/c/b3a10eca24fcfe913c0875e620f19596001bd6dc'
  - url: 'https://git.kernel.org/stable/c/9b9d253908478f504297ac283c514e5953ddafa6'
tags:
  - cve.org
epss: 0.0016
epssPercentile: 0.05182
ingestedAt: '2026-11-06T16:57:43.378Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler

The UVERBS_HANDLER(MLX5_IB_METHOD_GET_DATA_DIRECT_SYSFS_PATH) function
allocates memory for the device path using kobject_get_path(). If the
length of the device path exceeds the output buffer length, the function
returns -ENOSPC but does not free the allocated memory, resulting in a
memory leak.

Add a kfree() call to the error path to ensure the allocated memory is
properly freed.

Compile tested only. Issue found using a prototype static analysis tool
and code review.

## Affected

- `Linux >= ec7ad6530909983c8736c80af46e3529ce7bab55 < ee998cdbff6680891b0efd9d6ce53a388e5342c3`
- `Linux >= ec7ad6530909983c8736c80af46e3529ce7bab55 < b2bc649c18fbe8a7fd38d17266da3dcbfbcc44d2`
- `Linux >= ec7ad6530909983c8736c80af46e3529ce7bab55 < b3a10eca24fcfe913c0875e620f19596001bd6dc`
- `Linux >= ec7ad6530909983c8736c80af46e3529ce7bab55 < 9b9d253908478f504297ac283c514e5953ddafa6`
- `Linux 6.12`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.