🛡️ CVE-2026-45922 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

CVE-2026-45922 is recorded against 3 packages.

  • kernel (from 6.19.0 up to 6.19.4)
  • linux-kernel (from 6.19 up to 6.19.4)
  • unknown

Timeline and source

Published on 27 May 2026 and last revised on 28 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2026-45922 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2026-05-27
Updated 2026-08-12
Modified 2026-07-28

Affected Packages

Software From version Fixed in
kernel 6.19.0 6.19.4
linux-kernel 6.19 6.19.4
unknown — —

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