CVE-2025-40030
pinctrl: check the return value of pinmux_ops::get_function_name()
Description
In the Linux kernel, the following vulnerability has been resolved: pinctrl: check the return value of pinmux_ops::get_function_name() While the API contract in docs doesn't specify it explicitly, the generic implementation of the get_function_name() callback from struct pinmux_ops - pinmux_generic_get_function_name() - can fail and return NULL. This is already checked in pinmux_check_ops() so add a similar check in pinmux_func_name_to_selector() instead of passing the returned pointer right down to strcmp() where the NULL can get dereferenced. This is normal operation when adding new pinfunctions.
INFO
Published Date :
Oct. 28, 2025, 12:15 p.m.
Last Modified :
Oct. 28, 2025, 12:15 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel code.
- Check return values from get_function_name().
- Avoid dereferencing NULL pointers in strcmp().
- Apply patch to the pinctrl subsystem.
References to Advisories, Solutions, and Tools
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CVE-2025-40030.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-40030 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-40030
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 28, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: pinctrl: check the return value of pinmux_ops::get_function_name() While the API contract in docs doesn't specify it explicitly, the generic implementation of the get_function_name() callback from struct pinmux_ops - pinmux_generic_get_function_name() - can fail and return NULL. This is already checked in pinmux_check_ops() so add a similar check in pinmux_func_name_to_selector() instead of passing the returned pointer right down to strcmp() where the NULL can get dereferenced. This is normal operation when adding new pinfunctions. Added Reference https://git.kernel.org/stable/c/1a2ea887a5cd7d47bab599f733d89444df018b1a Added Reference https://git.kernel.org/stable/c/4002ee98c022d671ecc1e4a84029e9ae7d8a5603 Added Reference https://git.kernel.org/stable/c/688c688e0bf55824f4a38f8c2180046f089a3e3b Added Reference https://git.kernel.org/stable/c/b7e0535060a60cc99eafc19cc665d979714cd73a Added Reference https://git.kernel.org/stable/c/ba7f7c2b2b3261e7def67018c38c69b626e0e66e Added Reference https://git.kernel.org/stable/c/d77ef2f621cd1d605372c4c6ce667c496f6990c3