🛡️ CVE-2022-49187 — kernel

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

Description

clk: Fix clk_hw_get_clk() when dev is NULL

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

clk: Fix clk_hw_get_clk() when dev is NULL

Any registered clk_core structure can have a NULL pointer in its dev

field. While never actually documented, this is evidenced by the wide

usage of clk_register and clk_hw_register with a NULL device pointer,

and the fact that the core of_clk_hw_register() function also passes a

NULL device pointer.

A call to clk_hw_get_clk() on a clk_hw struct whose clk_core is in that

case will result in a NULL pointer derefence when it calls dev_name() on

that NULL device pointer.

Add a test for this case and use NULL as the dev_id if the device

pointer is NULL.

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-2022-49187 is recorded against 2 packages.

  • kernel (from 5.17.0 up to 5.17.2)
  • linux-kernel (from 5.17 up to 5.17.2)

Timeline and source

Published on 26 February 2025 and last revised on 15 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-2022-49187 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 2025-02-26
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
kernel 5.17.0 5.17.2
linux-kernel 5.17 5.17.2

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