CVE-2022-49187
Severity CVSS v4.0:
Pending analysis
Type:
CWE-476
NULL Pointer Dereference
Publication date:
26/02/2025
Last modified:
14/03/2025
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
clk: Fix clk_hw_get_clk() when dev is NULL<br />
<br />
Any registered clk_core structure can have a NULL pointer in its dev<br />
field. While never actually documented, this is evidenced by the wide<br />
usage of clk_register and clk_hw_register with a NULL device pointer,<br />
and the fact that the core of_clk_hw_register() function also passes a<br />
NULL device pointer.<br />
<br />
A call to clk_hw_get_clk() on a clk_hw struct whose clk_core is in that<br />
case will result in a NULL pointer derefence when it calls dev_name() on<br />
that NULL device pointer.<br />
<br />
Add a test for this case and use NULL as the dev_id if the device<br />
pointer is NULL.
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.11 (including) | 5.15.33 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.16 (including) | 5.16.19 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.17 (including) | 5.17.2 (excluding) |
To consult the complete list of CPE names with products and versions, see this page